Finding the Fourth Proportional to 1,089.39, 1,503.32 and 592.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.39 : 1,503.32 = 592.02 : x
2. Step 2: Convert to fraction form
   1,089.39/1,503.32 = 592.02/x
3. Step 3: Cross multiply
   1,089.39x = 1,503.32 × 592.02
4. Step 4: Simplify right side
   1,089.39x = 889,990.32
5. Step 5: Solve for x
   x = 889,990.32/1,089.39
6. Step 6: Final answer
   x = 816.96