Finding the Fourth Proportional to 2,245.90, 3,099.72 and 1,449

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.90 : 3,099.72 = 1,449 : x
2. Step 2: Convert to fraction form
   2,245.90/3,099.72 = 1,449/x
3. Step 3: Cross multiply
   2,245.90x = 3,099.72 × 1,449
4. Step 4: Simplify right side
   2,245.90x = 4,491,494.28
5. Step 5: Solve for x
   x = 4,491,494.28/2,245.90
6. Step 6: Final answer
   x = 1,999.86