Finding the Fourth Proportional to 1,089.50, 1,503.53 and 592.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.50 : 1,503.53 = 592.15 : x
2. Step 2: Convert to fraction form
   1,089.50/1,503.53 = 592.15/x
3. Step 3: Cross multiply
   1,089.50x = 1,503.53 × 592.15
4. Step 4: Simplify right side
   1,089.50x = 890,308.57
5. Step 5: Solve for x
   x = 890,308.57/1,089.50
6. Step 6: Final answer
   x = 817.17