Finding the Fourth Proportional to 1,061.80, 1,465.53 and 708.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.80 : 1,465.53 = 708.28 : x
2. Step 2: Convert to fraction form
   1,061.80/1,465.53 = 708.28/x
3. Step 3: Cross multiply
   1,061.80x = 1,465.53 × 708.28
4. Step 4: Simplify right side
   1,061.80x = 1,038,005.59
5. Step 5: Solve for x
   x = 1,038,005.59/1,061.80
6. Step 6: Final answer
   x = 977.59