Finding the Fourth Proportional to 2,427.92, 3,638.42 and 1,108.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.92 : 3,638.42 = 1,108.43 : x
2. Step 2: Convert to fraction form
   2,427.92/3,638.42 = 1,108.43/x
3. Step 3: Cross multiply
   2,427.92x = 3,638.42 × 1,108.43
4. Step 4: Simplify right side
   2,427.92x = 4,032,918.46
5. Step 5: Solve for x
   x = 4,032,918.46/2,427.92
6. Step 6: Final answer
   x = 1,661.06