Finding the Fourth Proportional to 1,086.88, 1,499.52 and 614.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.88 : 1,499.52 = 614.70 : x
2. Step 2: Convert to fraction form
   1,086.88/1,499.52 = 614.70/x
3. Step 3: Cross multiply
   1,086.88x = 1,499.52 × 614.70
4. Step 4: Simplify right side
   1,086.88x = 921,754.94
5. Step 5: Solve for x
   x = 921,754.94/1,086.88
6. Step 6: Final answer
   x = 848.07