Finding the Fourth Proportional to 1,150.38, 1,587.15 and 708.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.38 : 1,587.15 = 708.12 : x
2. Step 2: Convert to fraction form
   1,150.38/1,587.15 = 708.12/x
3. Step 3: Cross multiply
   1,150.38x = 1,587.15 × 708.12
4. Step 4: Simplify right side
   1,150.38x = 1,123,892.66
5. Step 5: Solve for x
   x = 1,123,892.66/1,150.38
6. Step 6: Final answer
   x = 976.98