Finding the Fourth Proportional to 1,086.29, 1,499.11 and 614.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.29 : 1,499.11 = 614.15 : x
2. Step 2: Convert to fraction form
   1,086.29/1,499.11 = 614.15/x
3. Step 3: Cross multiply
   1,086.29x = 1,499.11 × 614.15
4. Step 4: Simplify right side
   1,086.29x = 920,669.38
5. Step 5: Solve for x
   x = 920,669.38/1,086.29
6. Step 6: Final answer
   x = 847.53