Finding the Fourth Proportional to 2,940.18, 4,055.31 and 1,946.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.18 : 4,055.31 = 1,946.31 : x
2. Step 2: Convert to fraction form
   2,940.18/4,055.31 = 1,946.31/x
3. Step 3: Cross multiply
   2,940.18x = 4,055.31 × 1,946.31
4. Step 4: Simplify right side
   2,940.18x = 7,892,890.41
5. Step 5: Solve for x
   x = 7,892,890.41/2,940.18
6. Step 6: Final answer
   x = 2,684.49