Finding the Fourth Proportional to 1,086.13, 1,497.75 and 712.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.13 : 1,497.75 = 712.72 : x
2. Step 2: Convert to fraction form
   1,086.13/1,497.75 = 712.72/x
3. Step 3: Cross multiply
   1,086.13x = 1,497.75 × 712.72
4. Step 4: Simplify right side
   1,086.13x = 1,067,476.38
5. Step 5: Solve for x
   x = 1,067,476.38/1,086.13
6. Step 6: Final answer
   x = 982.83