Finding the Fourth Proportional to 2,669.11, 4,002.59 and 1,108.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.11 : 4,002.59 = 1,108.05 : x
2. Step 2: Convert to fraction form
   2,669.11/4,002.59 = 1,108.05/x
3. Step 3: Cross multiply
   2,669.11x = 4,002.59 × 1,108.05
4. Step 4: Simplify right side
   2,669.11x = 4,435,069.85
5. Step 5: Solve for x
   x = 4,435,069.85/2,669.11
6. Step 6: Final answer
   x = 1,661.63