Finding the Fourth Proportional to 1,086.74, 1,498.22 and 713.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.74 : 1,498.22 = 713.58 : x
2. Step 2: Convert to fraction form
   1,086.74/1,498.22 = 713.58/x
3. Step 3: Cross multiply
   1,086.74x = 1,498.22 × 713.58
4. Step 4: Simplify right side
   1,086.74x = 1,069,099.83
5. Step 5: Solve for x
   x = 1,069,099.83/1,086.74
6. Step 6: Final answer
   x = 983.77