Finding the Fourth Proportional to 3,942.05, 5,440.20 and 2,263.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.05 : 5,440.20 = 2,263.52 : x
2. Step 2: Convert to fraction form
   3,942.05/5,440.20 = 2,263.52/x
3. Step 3: Cross multiply
   3,942.05x = 5,440.20 × 2,263.52
4. Step 4: Simplify right side
   3,942.05x = 12,314,006.62
5. Step 5: Solve for x
   x = 12,314,006.62/3,942.05
6. Step 6: Final answer
   x = 3,123.76