Finding the Fourth Proportional to 2,944.28, 4,389.76 and 2,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,944.28 : 4,389.76 = 2,868.50 : x
2. Step 2: Convert to fraction form
   2,944.28/4,389.76 = 2,868.50/x
3. Step 3: Cross multiply
   2,944.28x = 4,389.76 × 2,868.50
4. Step 4: Simplify right side
   2,944.28x = 12,592,026.56
5. Step 5: Solve for x
   x = 12,592,026.56/2,944.28
6. Step 6: Final answer
   x = 4,276.78