Finding the Fourth Proportional to 2,801.76, 3,866.34 and 1,542.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.76 : 3,866.34 = 1,542.78 : x
2. Step 2: Convert to fraction form
   2,801.76/3,866.34 = 1,542.78/x
3. Step 3: Cross multiply
   2,801.76x = 3,866.34 × 1,542.78
4. Step 4: Simplify right side
   2,801.76x = 5,964,912.03
5. Step 5: Solve for x
   x = 5,964,912.03/2,801.76
6. Step 6: Final answer
   x = 2,128.99