Finding the Fourth Proportional to 2,406.24, 3,610.08 and 1,107.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.24 : 3,610.08 = 1,107.72 : x
2. Step 2: Convert to fraction form
   2,406.24/3,610.08 = 1,107.72/x
3. Step 3: Cross multiply
   2,406.24x = 3,610.08 × 1,107.72
4. Step 4: Simplify right side
   2,406.24x = 3,998,957.82
5. Step 5: Solve for x
   x = 3,998,957.82/2,406.24
6. Step 6: Final answer
   x = 1,661.91