Finding the Fourth Proportional to 1,086.14, 1,497.89 and 712.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.14 : 1,497.89 = 712.99 : x
2. Step 2: Convert to fraction form
   1,086.14/1,497.89 = 712.99/x
3. Step 3: Cross multiply
   1,086.14x = 1,497.89 × 712.99
4. Step 4: Simplify right side
   1,086.14x = 1,067,975.82
5. Step 5: Solve for x
   x = 1,067,975.82/1,086.14
6. Step 6: Final answer
   x = 983.27