Finding the Fourth Proportional to 1,087.69, 1,499.97 and 714.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.69 : 1,499.97 = 714.99 : x
2. Step 2: Convert to fraction form
   1,087.69/1,499.97 = 714.99/x
3. Step 3: Cross multiply
   1,087.69x = 1,499.97 × 714.99
4. Step 4: Simplify right side
   1,087.69x = 1,072,463.55
5. Step 5: Solve for x
   x = 1,072,463.55/1,087.69
6. Step 6: Final answer
   x = 986.00