Finding the Fourth Proportional to 3,934.82, 5,429.88 and 2,255.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,934.82 : 5,429.88 = 2,255.06 : x
2. Step 2: Convert to fraction form
   3,934.82/5,429.88 = 2,255.06/x
3. Step 3: Cross multiply
   3,934.82x = 5,429.88 × 2,255.06
4. Step 4: Simplify right side
   3,934.82x = 12,244,678.04
5. Step 5: Solve for x
   x = 12,244,678.04/3,934.82
6. Step 6: Final answer
   x = 3,111.88