Finding the Fourth Proportional to 2,520.42, 3,478.14 and 1,401.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.42 : 3,478.14 = 1,401.42 : x
2. Step 2: Convert to fraction form
   2,520.42/3,478.14 = 1,401.42/x
3. Step 3: Cross multiply
   2,520.42x = 3,478.14 × 1,401.42
4. Step 4: Simplify right side
   2,520.42x = 4,874,334.96
5. Step 5: Solve for x
   x = 4,874,334.96/2,520.42
6. Step 6: Final answer
   x = 1,933.94