Finding the Fourth Proportional to 3,914.60, 5,399.37 and 2,851.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.60 : 5,399.37 = 2,851.25 : x
2. Step 2: Convert to fraction form
   3,914.60/5,399.37 = 2,851.25/x
3. Step 3: Cross multiply
   3,914.60x = 5,399.37 × 2,851.25
4. Step 4: Simplify right side
   3,914.60x = 15,394,926.72
5. Step 5: Solve for x
   x = 15,394,926.72/3,914.60
6. Step 6: Final answer
   x = 3,932.70