Finding the Fourth Proportional to 1,086.42, 1,499.16 and 614.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.42 : 1,499.16 = 614.35 : x
2. Step 2: Convert to fraction form
   1,086.42/1,499.16 = 614.35/x
3. Step 3: Cross multiply
   1,086.42x = 1,499.16 × 614.35
4. Step 4: Simplify right side
   1,086.42x = 921,008.95
5. Step 5: Solve for x
   x = 921,008.95/1,086.42
6. Step 6: Final answer
   x = 847.75