Finding the Fourth Proportional to 3,907.74, 5,392.83 and 2,229.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.74 : 5,392.83 = 2,229.42 : x
2. Step 2: Convert to fraction form
   3,907.74/5,392.83 = 2,229.42/x
3. Step 3: Cross multiply
   3,907.74x = 5,392.83 × 2,229.42
4. Step 4: Simplify right side
   3,907.74x = 12,022,883.06
5. Step 5: Solve for x
   x = 12,022,883.06/3,907.74
6. Step 6: Final answer
   x = 3,076.68