Finding the Fourth Proportional to 1,086.69, 1,499.56 and 614.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.69 : 1,499.56 = 614.66 : x
2. Step 2: Convert to fraction form
   1,086.69/1,499.56 = 614.66/x
3. Step 3: Cross multiply
   1,086.69x = 1,499.56 × 614.66
4. Step 4: Simplify right side
   1,086.69x = 921,719.55
5. Step 5: Solve for x
   x = 921,719.55/1,086.69
6. Step 6: Final answer
   x = 848.19