Finding the Fourth Proportional to 2,520.42, 3,478.74 and 1,401.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.42 : 3,478.74 = 1,401.75 : x
2. Step 2: Convert to fraction form
   2,520.42/3,478.74 = 1,401.75/x
3. Step 3: Cross multiply
   2,520.42x = 3,478.74 × 1,401.75
4. Step 4: Simplify right side
   2,520.42x = 4,876,323.80
5. Step 5: Solve for x
   x = 4,876,323.80/2,520.42
6. Step 6: Final answer
   x = 1,934.73