Finding the Fourth Proportional to 2,721.72, 3,756 and 1,542.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.72 : 3,756 = 1,542.72 : x
2. Step 2: Convert to fraction form
   2,721.72/3,756 = 1,542.72/x
3. Step 3: Cross multiply
   2,721.72x = 3,756 × 1,542.72
4. Step 4: Simplify right side
   2,721.72x = 5,794,456.32
5. Step 5: Solve for x
   x = 5,794,456.32/2,721.72
6. Step 6: Final answer
   x = 2,128.97