Finding the Fourth Proportional to 2,482.20, 3,724.02 and 838.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,482.20 : 3,724.02 = 838.72 : x
2. Step 2: Convert to fraction form
   2,482.20/3,724.02 = 838.72/x
3. Step 3: Cross multiply
   2,482.20x = 3,724.02 × 838.72
4. Step 4: Simplify right side
   2,482.20x = 3,123,410.05
5. Step 5: Solve for x
   x = 3,123,410.05/2,482.20
6. Step 6: Final answer
   x = 1,258.32