Finding the Fourth Proportional to 2,401.92, 3,313.60 and 1,616.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.92 : 3,313.60 = 1,616.20 : x
2. Step 2: Convert to fraction form
   2,401.92/3,313.60 = 1,616.20/x
3. Step 3: Cross multiply
   2,401.92x = 3,313.60 × 1,616.20
4. Step 4: Simplify right side
   2,401.92x = 5,355,440.32
5. Step 5: Solve for x
   x = 5,355,440.32/2,401.92
6. Step 6: Final answer
   x = 2,229.65