Finding the Fourth Proportional to 3,934.05, 5,429.01 and 2,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,934.05 : 5,429.01 = 2,255.50 : x
2. Step 2: Convert to fraction form
   3,934.05/5,429.01 = 2,255.50/x
3. Step 3: Cross multiply
   3,934.05x = 5,429.01 × 2,255.50
4. Step 4: Simplify right side
   3,934.05x = 12,245,093.63
5. Step 5: Solve for x
   x = 12,245,093.63/3,934.05
6. Step 6: Final answer
   x = 3,112.59