So if Rome is the 4th beast and iron legs etc.,
And the Roman Empire lasted until 476 ad.
The stone must strike the statue of Dan 2 and end the iron in 476 ad. ?
Is that what you are saying?
No - you are trying to take Daniel in a far too literal sense:
Dan 2:44
And in the days of these kings shall the God of heaven set up a kingdom, which shall never be destroyed: and the kingdom shall not be left to other people, but it shall break in pieces and consume all these kingdoms,
and it shall stand for ever.
Dan 2:45 Forasmuch as thou sawest that the stone was cut out of the mountain without hands,
and that it brake in pieces the iron, the brass, the clay, the silver, and the gold; the great God hath made known to the king what shall come to pass hereafter: and the dream is certain, and the interpretation thereof sure.
Ask your self this, how can the kingdom be set up that breaks into pieces something that not longer exists "the brass, the clay, the silver, and the gold"?
You have to notice that all of the four Kingdoms had ruled over the Israelites at one time.
We are told that in the days of the fourth kingdom there would be set up a kingdom "which shall never be destroyed" - that is your "Pentecost" kingdom that exists to this day.
Mat 16:18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.
Heb 12:27 And this word, Yet once more,
signifieth the removing of those things that are shaken, as of things that are made, that those things which cannot be shaken may remain.
Heb 12:28
Wherefore we receiving a kingdom which cannot be moved, let us have grace, whereby we may serve God acceptably with reverence and godly fear:
In the 1st century AD the physical kingdom of Israel was shaken and removed, replaced by the spiritual "Pentecost" kingdom that "cannot be moved".