Finding the Fourth Proportional to 1,089.59, 1,503.61 and 592.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.59 : 1,503.61 = 592.22 : x
2. Step 2: Convert to fraction form
   1,089.59/1,503.61 = 592.22/x
3. Step 3: Cross multiply
   1,089.59x = 1,503.61 × 592.22
4. Step 4: Simplify right side
   1,089.59x = 890,467.91
5. Step 5: Solve for x
   x = 890,467.91/1,089.59
6. Step 6: Final answer
   x = 817.25