Finding the Fourth Proportional to 2,245.91, 3,099.33 and 1,251.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.91 : 3,099.33 = 1,251.21 : x
2. Step 2: Convert to fraction form
   2,245.91/3,099.33 = 1,251.21/x
3. Step 3: Cross multiply
   2,245.91x = 3,099.33 × 1,251.21
4. Step 4: Simplify right side
   2,245.91x = 3,877,912.69
5. Step 5: Solve for x
   x = 3,877,912.69/2,245.91
6. Step 6: Final answer
   x = 1,726.66