Finding the Fourth Proportional to 1,132.10, 1,561.03 and 1,086.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.10 : 1,561.03 = 1,086.74 : x
2. Step 2: Convert to fraction form
   1,132.10/1,561.03 = 1,086.74/x
3. Step 3: Cross multiply
   1,132.10x = 1,561.03 × 1,086.74
4. Step 4: Simplify right side
   1,132.10x = 1,696,423.22
5. Step 5: Solve for x
   x = 1,696,423.22/1,132.10
6. Step 6: Final answer
   x = 1,498.48