Finding the Fourth Proportional to 2,940.18, 4,443.60 and 2,889.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.18 : 4,443.60 = 2,889.15 : x
2. Step 2: Convert to fraction form
   2,940.18/4,443.60 = 2,889.15/x
3. Step 3: Cross multiply
   2,940.18x = 4,443.60 × 2,889.15
4. Step 4: Simplify right side
   2,940.18x = 12,838,226.94
5. Step 5: Solve for x
   x = 12,838,226.94/2,940.18
6. Step 6: Final answer
   x = 4,366.48