Finding the Fourth Proportional to 1,086.21, 1,500.53 and 754.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.21 : 1,500.53 = 754.52 : x
2. Step 2: Convert to fraction form
   1,086.21/1,500.53 = 754.52/x
3. Step 3: Cross multiply
   1,086.21x = 1,500.53 × 754.52
4. Step 4: Simplify right side
   1,086.21x = 1,132,168.62
5. Step 5: Solve for x
   x = 1,132,168.62/1,086.21
6. Step 6: Final answer
   x = 1,042.31