Finding the Fourth Proportional to 2,449.72, 3,380.66 and 1,401.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.72 : 3,380.66 = 1,401.78 : x
2. Step 2: Convert to fraction form
   2,449.72/3,380.66 = 1,401.78/x
3. Step 3: Cross multiply
   2,449.72x = 3,380.66 × 1,401.78
4. Step 4: Simplify right side
   2,449.72x = 4,738,941.57
5. Step 5: Solve for x
   x = 4,738,941.57/2,449.72
6. Step 6: Final answer
   x = 1,934.48