Finding the Fourth Proportional to 1,086.84, 1,499.91 and 714.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.84 : 1,499.91 = 714.45 : x
2. Step 2: Convert to fraction form
   1,086.84/1,499.91 = 714.45/x
3. Step 3: Cross multiply
   1,086.84x = 1,499.91 × 714.45
4. Step 4: Simplify right side
   1,086.84x = 1,071,610.70
5. Step 5: Solve for x
   x = 1,071,610.70/1,086.84
6. Step 6: Final answer
   x = 985.99