Finding the Fourth Proportional to 1,152.30, 1,590.20 and 654.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.30 : 1,590.20 = 654.92 : x
2. Step 2: Convert to fraction form
   1,152.30/1,590.20 = 654.92/x
3. Step 3: Cross multiply
   1,152.30x = 1,590.20 × 654.92
4. Step 4: Simplify right side
   1,152.30x = 1,041,453.78
5. Step 5: Solve for x
   x = 1,041,453.78/1,152.30
6. Step 6: Final answer
   x = 903.80