Finding the Fourth Proportional to 2,945.88, 4,397.76 and 2,843.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.88 : 4,397.76 = 2,843.40 : x
2. Step 2: Convert to fraction form
   2,945.88/4,397.76 = 2,843.40/x
3. Step 3: Cross multiply
   2,945.88x = 4,397.76 × 2,843.40
4. Step 4: Simplify right side
   2,945.88x = 12,504,590.78
5. Step 5: Solve for x
   x = 12,504,590.78/2,945.88
6. Step 6: Final answer
   x = 4,244.77