Finding the Fourth Proportional to 2,801.27, 3,865.77 and 1,542.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.27 : 3,865.77 = 1,542.45 : x
2. Step 2: Convert to fraction form
   2,801.27/3,865.77 = 1,542.45/x
3. Step 3: Cross multiply
   2,801.27x = 3,865.77 × 1,542.45
4. Step 4: Simplify right side
   2,801.27x = 5,962,756.94
5. Step 5: Solve for x
   x = 5,962,756.94/2,801.27
6. Step 6: Final answer
   x = 2,128.59