Finding the Fourth Proportional to 2,801.22, 3,865.62 and 1,542.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.22 : 3,865.62 = 1,542.30 : x
2. Step 2: Convert to fraction form
   2,801.22/3,865.62 = 1,542.30/x
3. Step 3: Cross multiply
   2,801.22x = 3,865.62 × 1,542.30
4. Step 4: Simplify right side
   2,801.22x = 5,961,945.73
5. Step 5: Solve for x
   x = 5,961,945.73/2,801.22
6. Step 6: Final answer
   x = 2,128.34