Finding the Fourth Proportional to 1,008.88, 1,392.25 and 589.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.88 : 1,392.25 = 589.52 : x
2. Step 2: Convert to fraction form
   1,008.88/1,392.25 = 589.52/x
3. Step 3: Cross multiply
   1,008.88x = 1,392.25 × 589.52
4. Step 4: Simplify right side
   1,008.88x = 820,759.22
5. Step 5: Solve for x
   x = 820,759.22/1,008.88
6. Step 6: Final answer
   x = 813.54