Finding the Fourth Proportional to 3,933.39, 5,427.98 and 2,255.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,933.39 : 5,427.98 = 2,255.78 : x
2. Step 2: Convert to fraction form
   3,933.39/5,427.98 = 2,255.78/x
3. Step 3: Cross multiply
   3,933.39x = 5,427.98 × 2,255.78
4. Step 4: Simplify right side
   3,933.39x = 12,244,328.72
5. Step 5: Solve for x
   x = 12,244,328.72/3,933.39
6. Step 6: Final answer
   x = 3,112.92