Finding the Fourth Proportional to 1,086.31, 1,499.13 and 588.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.31 : 1,499.13 = 588.97 : x
2. Step 2: Convert to fraction form
   1,086.31/1,499.13 = 588.97/x
3. Step 3: Cross multiply
   1,086.31x = 1,499.13 × 588.97
4. Step 4: Simplify right side
   1,086.31x = 882,944.47
5. Step 5: Solve for x
   x = 882,944.47/1,086.31
6. Step 6: Final answer
   x = 812.79