Finding the Fourth Proportional to 2,238.20, 3,088.91 and 1,243.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.20 : 3,088.91 = 1,243.46 : x
2. Step 2: Convert to fraction form
   2,238.20/3,088.91 = 1,243.46/x
3. Step 3: Cross multiply
   2,238.20x = 3,088.91 × 1,243.46
4. Step 4: Simplify right side
   2,238.20x = 3,840,936.03
5. Step 5: Solve for x
   x = 3,840,936.03/2,238.20
6. Step 6: Final answer
   x = 1,716.08