Finding the Fourth Proportional to 1,086.46, 1,498.91 and 713.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.46 : 1,498.91 = 713.64 : x
2. Step 2: Convert to fraction form
   1,086.46/1,498.91 = 713.64/x
3. Step 3: Cross multiply
   1,086.46x = 1,498.91 × 713.64
4. Step 4: Simplify right side
   1,086.46x = 1,069,682.31
5. Step 5: Solve for x
   x = 1,069,682.31/1,086.46
6. Step 6: Final answer
   x = 984.56