Finding the Fourth Proportional to 1,086.98, 1,499.87 and 714.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.98 : 1,499.87 = 714.11 : x
2. Step 2: Convert to fraction form
   1,086.98/1,499.87 = 714.11/x
3. Step 3: Cross multiply
   1,086.98x = 1,499.87 × 714.11
4. Step 4: Simplify right side
   1,086.98x = 1,071,068.60
5. Step 5: Solve for x
   x = 1,071,068.60/1,086.98
6. Step 6: Final answer
   x = 985.36