Finding the Fourth Proportional to 2,801.15, 3,865.56 and 1,542.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,801.15 : 3,865.56 = 1,542.32 : x
2. Step 2: Convert to fraction form
   2,801.15/3,865.56 = 1,542.32/x
3. Step 3: Cross multiply
   2,801.15x = 3,865.56 × 1,542.32
4. Step 4: Simplify right side
   2,801.15x = 5,961,911.17
5. Step 5: Solve for x
   x = 5,961,911.17/2,801.15
6. Step 6: Final answer
   x = 2,128.38