Finding the Fourth Proportional to 2,449.86, 3,380.78 and 1,330.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,449.86 : 3,380.78 = 1,330.79 : x
2. Step 2: Convert to fraction form
   2,449.86/3,380.78 = 1,330.79/x
3. Step 3: Cross multiply
   2,449.86x = 3,380.78 × 1,330.79
4. Step 4: Simplify right side
   2,449.86x = 4,499,084.66
5. Step 5: Solve for x
   x = 4,499,084.66/2,449.86
6. Step 6: Final answer
   x = 1,836.47