Finding the Fourth Proportional to 1,452.40, 2,003.61 and 928.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.40 : 2,003.61 = 928.06 : x
2. Step 2: Convert to fraction form
   1,452.40/2,003.61 = 928.06/x
3. Step 3: Cross multiply
   1,452.40x = 2,003.61 × 928.06
4. Step 4: Simplify right side
   1,452.40x = 1,859,470.30
5. Step 5: Solve for x
   x = 1,859,470.30/1,452.40
6. Step 6: Final answer
   x = 1,280.27