Finding the Fourth Proportional to 2,238.69, 3,089.44 and 1,243.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.69 : 3,089.44 = 1,243.95 : x
2. Step 2: Convert to fraction form
   2,238.69/3,089.44 = 1,243.95/x
3. Step 3: Cross multiply
   2,238.69x = 3,089.44 × 1,243.95
4. Step 4: Simplify right side
   2,238.69x = 3,843,108.89
5. Step 5: Solve for x
   x = 3,843,108.89/2,238.69
6. Step 6: Final answer
   x = 1,716.68