Finding the Fourth Proportional to 2,857.54, 3,940.77 and 2,194.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857.54 : 3,940.77 = 2,194.42 : x
2. Step 2: Convert to fraction form
   2,857.54/3,940.77 = 2,194.42/x
3. Step 3: Cross multiply
   2,857.54x = 3,940.77 × 2,194.42
4. Step 4: Simplify right side
   2,857.54x = 8,647,704.50
5. Step 5: Solve for x
   x = 8,647,704.50/2,857.54
6. Step 6: Final answer
   x = 3,026.28