Finding the Fourth Proportional to 2,238.34, 3,088.89 and 1,243.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.34 : 3,088.89 = 1,243.63 : x
2. Step 2: Convert to fraction form
   2,238.34/3,088.89 = 1,243.63/x
3. Step 3: Cross multiply
   2,238.34x = 3,088.89 × 1,243.63
4. Step 4: Simplify right side
   2,238.34x = 3,841,436.27
5. Step 5: Solve for x
   x = 3,841,436.27/2,238.34
6. Step 6: Final answer
   x = 1,716.20