Finding the Fourth Proportional to 1,152.58, 1,590.49 and 655.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.58 : 1,590.49 = 655.15 : x
2. Step 2: Convert to fraction form
   1,152.58/1,590.49 = 655.15/x
3. Step 3: Cross multiply
   1,152.58x = 1,590.49 × 655.15
4. Step 4: Simplify right side
   1,152.58x = 1,041,998.30
5. Step 5: Solve for x
   x = 1,041,998.30/1,152.58
6. Step 6: Final answer
   x = 904.06