Finding the Fourth Proportional to 2,188.78, 3,019.98 and 1,244.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.78 : 3,019.98 = 1,244.44 : x
2. Step 2: Convert to fraction form
   2,188.78/3,019.98 = 1,244.44/x
3. Step 3: Cross multiply
   2,188.78x = 3,019.98 × 1,244.44
4. Step 4: Simplify right side
   2,188.78x = 3,758,183.91
5. Step 5: Solve for x
   x = 3,758,183.91/2,188.78
6. Step 6: Final answer
   x = 1,717.02