Finding the Fourth Proportional to 3,942.69, 5,440.50 and 2,263.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.69 : 5,440.50 = 2,263.77 : x
2. Step 2: Convert to fraction form
   3,942.69/5,440.50 = 2,263.77/x
3. Step 3: Cross multiply
   3,942.69x = 5,440.50 × 2,263.77
4. Step 4: Simplify right side
   3,942.69x = 12,316,040.69
5. Step 5: Solve for x
   x = 12,316,040.69/3,942.69
6. Step 6: Final answer
   x = 3,123.77