Finding the Fourth Proportional to 2,944.14, 4,428.56 and 2,919.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,944.14 : 4,428.56 = 2,919.43 : x
2. Step 2: Convert to fraction form
   2,944.14/4,428.56 = 2,919.43/x
3. Step 3: Cross multiply
   2,944.14x = 4,428.56 × 2,919.43
4. Step 4: Simplify right side
   2,944.14x = 12,928,870.92
5. Step 5: Solve for x
   x = 12,928,870.92/2,944.14
6. Step 6: Final answer
   x = 4,391.39