Finding the Fourth Proportional to 2,449.16, 3,380.40 and 1,401.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.16 : 3,380.40 = 1,401.80 : x
2. Step 2: Convert to fraction form
   2,449.16/3,380.40 = 1,401.80/x
3. Step 3: Cross multiply
   2,449.16x = 3,380.40 × 1,401.80
4. Step 4: Simplify right side
   2,449.16x = 4,738,644.72
5. Step 5: Solve for x
   x = 4,738,644.72/2,449.16
6. Step 6: Final answer
   x = 1,934.80