Finding the Fourth Proportional to 2,801.31, 3,865.82 and 1,542.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.31 : 3,865.82 = 1,542.39 : x
2. Step 2: Convert to fraction form
   2,801.31/3,865.82 = 1,542.39/x
3. Step 3: Cross multiply
   2,801.31x = 3,865.82 × 1,542.39
4. Step 4: Simplify right side
   2,801.31x = 5,962,602.11
5. Step 5: Solve for x
   x = 5,962,602.11/2,801.31
6. Step 6: Final answer
   x = 2,128.50