Finding the Fourth Proportional to 2,429.20, 3,410.60 and 2,429.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.20 : 3,410.60 = 2,429.20 : x
2. Step 2: Convert to fraction form
   2,429.20/3,410.60 = 2,429.20/x
3. Step 3: Cross multiply
   2,429.20x = 3,410.60 × 2,429.20
4. Step 4: Simplify right side
   2,429.20x = 8,285,029.52
5. Step 5: Solve for x
   x = 8,285,029.52/2,429.20
6. Step 6: Final answer
   x = 3,410.60