Finding the Fourth Proportional to 1,086.43, 1,498.86 and 713.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.43 : 1,498.86 = 713.61 : x
2. Step 2: Convert to fraction form
   1,086.43/1,498.86 = 713.61/x
3. Step 3: Cross multiply
   1,086.43x = 1,498.86 × 713.61
4. Step 4: Simplify right side
   1,086.43x = 1,069,601.48
5. Step 5: Solve for x
   x = 1,069,601.48/1,086.43
6. Step 6: Final answer
   x = 984.51