Finding the Fourth Proportional to 1,086.64, 1,499.16 and 713.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.64 : 1,499.16 = 713.82 : x
2. Step 2: Convert to fraction form
   1,086.64/1,499.16 = 713.82/x
3. Step 3: Cross multiply
   1,086.64x = 1,499.16 × 713.82
4. Step 4: Simplify right side
   1,086.64x = 1,070,122.90
5. Step 5: Solve for x
   x = 1,070,122.90/1,086.64
6. Step 6: Final answer
   x = 984.80