Finding the Fourth Proportional to 2,238.12, 3,088.68 and 1,243.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.12 : 3,088.68 = 1,243.56 : x
2. Step 2: Convert to fraction form
   2,238.12/3,088.68 = 1,243.56/x
3. Step 3: Cross multiply
   2,238.12x = 3,088.68 × 1,243.56
4. Step 4: Simplify right side
   2,238.12x = 3,840,958.90
5. Step 5: Solve for x
   x = 3,840,958.90/2,238.12
6. Step 6: Final answer
   x = 1,716.15