Finding the Fourth Proportional to 1,132.02, 1,561.72 and 689.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.02 : 1,561.72 = 689.86 : x
2. Step 2: Convert to fraction form
   1,132.02/1,561.72 = 689.86/x
3. Step 3: Cross multiply
   1,132.02x = 1,561.72 × 689.86
4. Step 4: Simplify right side
   1,132.02x = 1,077,368.16
5. Step 5: Solve for x
   x = 1,077,368.16/1,132.02
6. Step 6: Final answer
   x = 951.72