Finding the Fourth Proportional to 3,934.02, 5,428.96 and 2,255.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,934.02 : 5,428.96 = 2,255.52 : x
2. Step 2: Convert to fraction form
   3,934.02/5,428.96 = 2,255.52/x
3. Step 3: Cross multiply
   3,934.02x = 5,428.96 × 2,255.52
4. Step 4: Simplify right side
   3,934.02x = 12,245,127.86
5. Step 5: Solve for x
   x = 12,245,127.86/3,934.02
6. Step 6: Final answer
   x = 3,112.62