Finding the Fourth Proportional to 3,862.78, 5,793.25 and 1,781.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,862.78 : 5,793.25 = 1,781.48 : x
2. Step 2: Convert to fraction form
   3,862.78/5,793.25 = 1,781.48/x
3. Step 3: Cross multiply
   3,862.78x = 5,793.25 × 1,781.48
4. Step 4: Simplify right side
   3,862.78x = 10,320,559.01
5. Step 5: Solve for x
   x = 10,320,559.01/3,862.78
6. Step 6: Final answer
   x = 2,671.80