Finding the Fourth Proportional to 1,086.76, 1,499.66 and 614.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.76 : 1,499.66 = 614.71 : x
2. Step 2: Convert to fraction form
   1,086.76/1,499.66 = 614.71/x
3. Step 3: Cross multiply
   1,086.76x = 1,499.66 × 614.71
4. Step 4: Simplify right side
   1,086.76x = 921,856.00
5. Step 5: Solve for x
   x = 921,856.00/1,086.76
6. Step 6: Final answer
   x = 848.26