Finding the Fourth Proportional to 2,749.31, 4,122.92 and 1,105.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,749.31 : 4,122.92 = 1,105.29 : x
2. Step 2: Convert to fraction form
   2,749.31/4,122.92 = 1,105.29/x
3. Step 3: Cross multiply
   2,749.31x = 4,122.92 × 1,105.29
4. Step 4: Simplify right side
   2,749.31x = 4,557,016.72
5. Step 5: Solve for x
   x = 4,557,016.72/2,749.31
6. Step 6: Final answer
   x = 1,657.52