Finding the Fourth Proportional to 1,086.63, 1,499.54 and 589.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.63 : 1,499.54 = 589.26 : x
2. Step 2: Convert to fraction form
   1,086.63/1,499.54 = 589.26/x
3. Step 3: Cross multiply
   1,086.63x = 1,499.54 × 589.26
4. Step 4: Simplify right side
   1,086.63x = 883,618.94
5. Step 5: Solve for x
   x = 883,618.94/1,086.63
6. Step 6: Final answer
   x = 813.17