Finding the Fourth Proportional to 2,449.78, 3,380.06 and 1,455

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.78 : 3,380.06 = 1,455 : x
2. Step 2: Convert to fraction form
   2,449.78/3,380.06 = 1,455/x
3. Step 3: Cross multiply
   2,449.78x = 3,380.06 × 1,455
4. Step 4: Simplify right side
   2,449.78x = 4,917,987.30
5. Step 5: Solve for x
   x = 4,917,987.30/2,449.78
6. Step 6: Final answer
   x = 2,007.52