Finding the Fourth Proportional to 2,940.80, 4,389.60 and 2,746.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.80 : 4,389.60 = 2,746.24 : x
2. Step 2: Convert to fraction form
   2,940.80/4,389.60 = 2,746.24/x
3. Step 3: Cross multiply
   2,940.80x = 4,389.60 × 2,746.24
4. Step 4: Simplify right side
   2,940.80x = 12,054,895.10
5. Step 5: Solve for x
   x = 12,054,895.10/2,940.80
6. Step 6: Final answer
   x = 4,099.19