Finding the Fourth Proportional to 2,142.46, 3,211.39 and 1,401.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.46 : 3,211.39 = 1,401.79 : x
2. Step 2: Convert to fraction form
   2,142.46/3,211.39 = 1,401.79/x
3. Step 3: Cross multiply
   2,142.46x = 3,211.39 × 1,401.79
4. Step 4: Simplify right side
   2,142.46x = 4,501,694.39
5. Step 5: Solve for x
   x = 4,501,694.39/2,142.46
6. Step 6: Final answer
   x = 2,101.18