The scale is 1in.= ft. In the new scale drawing a length of 4 inches represent an actual length of ft. So a length of 1 inch represents an actual length of feet

actual length = 1 foot

Step-by-step explanation: Given that The scale is 1in.= ft.

In the new scale drawing a length of 4 inches represent an actual length of ft. Let the new length in feet be L

1/4 = 1/L

L = 4ft

So a length of 1 inch represents an actual length of feet. Let the actual length be y

4/y = 4/ 1

The actual length = 1 ft

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09