Finding the Fourth Proportional to 2,943.60, 4,383.98 and 2,909.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,943.60 : 4,383.98 = 2,909.58 : x
2. Step 2: Convert to fraction form
   2,943.60/4,383.98 = 2,909.58/x
3. Step 3: Cross multiply
   2,943.60x = 4,383.98 × 2,909.58
4. Step 4: Simplify right side
   2,943.60x = 12,755,525.98
5. Step 5: Solve for x
   x = 12,755,525.98/2,943.60
6. Step 6: Final answer
   x = 4,333.31