Finding the Fourth Proportional to 1,086.56, 1,498.90 and 713.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.56 : 1,498.90 = 713.49 : x
2. Step 2: Convert to fraction form
   1,086.56/1,498.90 = 713.49/x
3. Step 3: Cross multiply
   1,086.56x = 1,498.90 × 713.49
4. Step 4: Simplify right side
   1,086.56x = 1,069,450.16
5. Step 5: Solve for x
   x = 1,069,450.16/1,086.56
6. Step 6: Final answer
   x = 984.25