Finding the Fourth Proportional to 3,401.74, 4,693.19 and 2,142.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.74 : 4,693.19 = 2,142.91 : x
2. Step 2: Convert to fraction form
   3,401.74/4,693.19 = 2,142.91/x
3. Step 3: Cross multiply
   3,401.74x = 4,693.19 × 2,142.91
4. Step 4: Simplify right side
   3,401.74x = 10,057,083.78
5. Step 5: Solve for x
   x = 10,057,083.78/3,401.74
6. Step 6: Final answer
   x = 2,956.45