Finding the Fourth Proportional to 1,061.72, 1,465.68 and 708.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.72 : 1,465.68 = 708.24 : x
2. Step 2: Convert to fraction form
   1,061.72/1,465.68 = 708.24/x
3. Step 3: Cross multiply
   1,061.72x = 1,465.68 × 708.24
4. Step 4: Simplify right side
   1,061.72x = 1,038,053.20
5. Step 5: Solve for x
   x = 1,038,053.20/1,061.72
6. Step 6: Final answer
   x = 977.71