Finding the Fourth Proportional to 2,691.72, 4,039.42 and 1,048.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,691.72 : 4,039.42 = 1,048.27 : x
2. Step 2: Convert to fraction form
   2,691.72/4,039.42 = 1,048.27/x
3. Step 3: Cross multiply
   2,691.72x = 4,039.42 × 1,048.27
4. Step 4: Simplify right side
   2,691.72x = 4,234,400.18
5. Step 5: Solve for x
   x = 4,234,400.18/2,691.72
6. Step 6: Final answer
   x = 1,573.12