Finding the Fourth Proportional to 2,669.61, 4,003.34 and 1,108.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.61 : 4,003.34 = 1,108.55 : x
2. Step 2: Convert to fraction form
   2,669.61/4,003.34 = 1,108.55/x
3. Step 3: Cross multiply
   2,669.61x = 4,003.34 × 1,108.55
4. Step 4: Simplify right side
   2,669.61x = 4,437,902.56
5. Step 5: Solve for x
   x = 4,437,902.56/2,669.61
6. Step 6: Final answer
   x = 1,662.38