Finding the Fourth Proportional to 2,940.66, 4,390.71 and 2,393.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.66 : 4,390.71 = 2,393.88 : x
2. Step 2: Convert to fraction form
   2,940.66/4,390.71 = 2,393.88/x
3. Step 3: Cross multiply
   2,940.66x = 4,390.71 × 2,393.88
4. Step 4: Simplify right side
   2,940.66x = 10,510,832.85
5. Step 5: Solve for x
   x = 10,510,832.85/2,940.66
6. Step 6: Final answer
   x = 3,574.31