Finding the Fourth Proportional to 1,086.52, 1,499.55 and 614.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.52 : 1,499.55 = 614.56 : x
2. Step 2: Convert to fraction form
   1,086.52/1,499.55 = 614.56/x
3. Step 3: Cross multiply
   1,086.52x = 1,499.55 × 614.56
4. Step 4: Simplify right side
   1,086.52x = 921,552.88
5. Step 5: Solve for x
   x = 921,552.88/1,086.52
6. Step 6: Final answer
   x = 848.17