Finding the Fourth Proportional to 1,087.18, 1,499.80 and 714.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.18 : 1,499.80 = 714.02 : x
2. Step 2: Convert to fraction form
   1,087.18/1,499.80 = 714.02/x
3. Step 3: Cross multiply
   1,087.18x = 1,499.80 × 714.02
4. Step 4: Simplify right side
   1,087.18x = 1,070,891.75
5. Step 5: Solve for x
   x = 1,070,891.75/1,087.18
6. Step 6: Final answer
   x = 985.02