Finding the Fourth Proportional to 1,086.26, 1,499.20 and 614.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.26 : 1,499.20 = 614.30 : x
2. Step 2: Convert to fraction form
   1,086.26/1,499.20 = 614.30/x
3. Step 3: Cross multiply
   1,086.26x = 1,499.20 × 614.30
4. Step 4: Simplify right side
   1,086.26x = 920,960.77
5. Step 5: Solve for x
   x = 920,960.77/1,086.26
6. Step 6: Final answer
   x = 847.83