Finding the Fourth Proportional to 3,401.79, 4,694.32 and 2,142.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.79 : 4,694.32 = 2,142.44 : x
2. Step 2: Convert to fraction form
   3,401.79/4,694.32 = 2,142.44/x
3. Step 3: Cross multiply
   3,401.79x = 4,694.32 × 2,142.44
4. Step 4: Simplify right side
   3,401.79x = 10,057,298.94
5. Step 5: Solve for x
   x = 10,057,298.94/3,401.79
6. Step 6: Final answer
   x = 2,956.47