Finding the Fourth Proportional to 1,066.17, 1,469.97 and 716.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.17 : 1,469.97 = 716.25 : x
2. Step 2: Convert to fraction form
   1,066.17/1,469.97 = 716.25/x
3. Step 3: Cross multiply
   1,066.17x = 1,469.97 × 716.25
4. Step 4: Simplify right side
   1,066.17x = 1,052,866.01
5. Step 5: Solve for x
   x = 1,052,866.01/1,066.17
6. Step 6: Final answer
   x = 987.52