Finding the Fourth Proportional to 1,132.79, 1,562.29 and 956.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.79 : 1,562.29 = 956.61 : x
2. Step 2: Convert to fraction form
   1,132.79/1,562.29 = 956.61/x
3. Step 3: Cross multiply
   1,132.79x = 1,562.29 × 956.61
4. Step 4: Simplify right side
   1,132.79x = 1,494,499.85
5. Step 5: Solve for x
   x = 1,494,499.85/1,132.79
6. Step 6: Final answer
   x = 1,319.31