From the question, we were told that:
Willi's tower in Chicago is 1450 feet tall.
John Hancock Center in Chicago also is 1127 feet tall.
If we are to make the Willi's tower 3 meters tall, we are to find the approximate height of John Hancock replica.
Since Willi's Tower 1450 ft is equivalent to John Hancock 1127 ft.
The 3m Willi's Tower will be equivalent to:
1127/1450 * 3m
= 0.7772 * 3m
= 2.33m
Therefore John Hancock replica will be 2.33m.