Finding the Fourth Proportional to 2,426.80, 3,639.72 and 1,110.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.80 : 3,639.72 = 1,110.15 : x
2. Step 2: Convert to fraction form
   2,426.80/3,639.72 = 1,110.15/x
3. Step 3: Cross multiply
   2,426.80x = 3,639.72 × 1,110.15
4. Step 4: Simplify right side
   2,426.80x = 4,040,635.16
5. Step 5: Solve for x
   x = 4,040,635.16/2,426.80
6. Step 6: Final answer
   x = 1,665.01