Finding the Fourth Proportional to 1,109.97, 1,531.49 and 814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.97 : 1,531.49 = 814.72 : x
2. Step 2: Convert to fraction form
   1,109.97/1,531.49 = 814.72/x
3. Step 3: Cross multiply
   1,109.97x = 1,531.49 × 814.72
4. Step 4: Simplify right side
   1,109.97x = 1,247,735.53
5. Step 5: Solve for x
   x = 1,247,735.53/1,109.97
6. Step 6: Final answer
   x = 1,124.12