Finding the Fourth Proportional to 2,591.09, 3,883.38 and 1,108.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.09 : 3,883.38 = 1,108.57 : x
2. Step 2: Convert to fraction form
   2,591.09/3,883.38 = 1,108.57/x
3. Step 3: Cross multiply
   2,591.09x = 3,883.38 × 1,108.57
4. Step 4: Simplify right side
   2,591.09x = 4,304,979.15
5. Step 5: Solve for x
   x = 4,304,979.15/2,591.09
6. Step 6: Final answer
   x = 1,661.45