Finding the Fourth Proportional to 2,721.81, 3,755.52 and 1,542.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.81 : 3,755.52 = 1,542.45 : x
2. Step 2: Convert to fraction form
   2,721.81/3,755.52 = 1,542.45/x
3. Step 3: Cross multiply
   2,721.81x = 3,755.52 × 1,542.45
4. Step 4: Simplify right side
   2,721.81x = 5,792,701.82
5. Step 5: Solve for x
   x = 5,792,701.82/2,721.81
6. Step 6: Final answer
   x = 2,128.25