Finding the Fourth Proportional to 3,860.56, 5,788.34 and 2,540.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.56 : 5,788.34 = 2,540.31 : x
2. Step 2: Convert to fraction form
   3,860.56/5,788.34 = 2,540.31/x
3. Step 3: Cross multiply
   3,860.56x = 5,788.34 × 2,540.31
4. Step 4: Simplify right side
   3,860.56x = 14,704,196.52
5. Step 5: Solve for x
   x = 14,704,196.52/3,860.56
6. Step 6: Final answer
   x = 3,808.83