Finding the Fourth Proportional to 1,152.32, 1,590.42 and 654.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.32 : 1,590.42 = 654.90 : x
2. Step 2: Convert to fraction form
   1,152.32/1,590.42 = 654.90/x
3. Step 3: Cross multiply
   1,152.32x = 1,590.42 × 654.90
4. Step 4: Simplify right side
   1,152.32x = 1,041,566.06
5. Step 5: Solve for x
   x = 1,041,566.06/1,152.32
6. Step 6: Final answer
   x = 903.89