Finding the Fourth Proportional to 1,087.28, 1,500.42 and 589.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.28 : 1,500.42 = 589.92 : x
2. Step 2: Convert to fraction form
   1,087.28/1,500.42 = 589.92/x
3. Step 3: Cross multiply
   1,087.28x = 1,500.42 × 589.92
4. Step 4: Simplify right side
   1,087.28x = 885,127.77
5. Step 5: Solve for x
   x = 885,127.77/1,087.28
6. Step 6: Final answer
   x = 814.08