Finding the Fourth Proportional to 4,826.20, 7,233.90 and 2,485.30

Step by Step Solution

1. Step 1: Write the proportion equation
   4,826.20 : 7,233.90 = 2,485.30 : x
2. Step 2: Convert to fraction form
   4,826.20/7,233.90 = 2,485.30/x
3. Step 3: Cross multiply
   4,826.20x = 7,233.90 × 2,485.30
4. Step 4: Simplify right side
   4,826.20x = 17,978,411.67
5. Step 5: Solve for x
   x = 17,978,411.67/4,826.20
6. Step 6: Final answer
   x = 3,725.17