Finding the Fourth Proportional to 1,086.59, 1,499.49 and 589.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.59 : 1,499.49 = 589.22 : x
2. Step 2: Convert to fraction form
   1,086.59/1,499.49 = 589.22/x
3. Step 3: Cross multiply
   1,086.59x = 1,499.49 × 589.22
4. Step 4: Simplify right side
   1,086.59x = 883,531.04
5. Step 5: Solve for x
   x = 883,531.04/1,086.59
6. Step 6: Final answer
   x = 813.12