Finding the Fourth Proportional to 2,480.52, 3,721.20 and 920.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,480.52 : 3,721.20 = 920.52 : x
2. Step 2: Convert to fraction form
   2,480.52/3,721.20 = 920.52/x
3. Step 3: Cross multiply
   2,480.52x = 3,721.20 × 920.52
4. Step 4: Simplify right side
   2,480.52x = 3,425,439.02
5. Step 5: Solve for x
   x = 3,425,439.02/2,480.52
6. Step 6: Final answer
   x = 1,380.94