How many feet will sound travel sound travel in 1 second?

Answer 1

1100 feet

Update: You're just about right. Technically, though, it's a little over:

761 miles = 4018080 feet

1 hour = 3600 seconds

~1116 constitutes supersonic flight at sea level

Answer 2

The speed of sound depends on the medium through which it is passing.

In air, sound travels at roughly 1080 ft per second. This varies with temperature and pressure.

In fresh water, sound travels at nearly 5,000 ft per second. Again, this will vary with temperature, pressure, and dissolved solids.