Finding the Fourth Proportional to 2,187.73, 3,018.94 and 1,243.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.73 : 3,018.94 = 1,243.49 : x
2. Step 2: Convert to fraction form
   2,187.73/3,018.94 = 1,243.49/x
3. Step 3: Cross multiply
   2,187.73x = 3,018.94 × 1,243.49
4. Step 4: Simplify right side
   2,187.73x = 3,754,021.70
5. Step 5: Solve for x
   x = 3,754,021.70/2,187.73
6. Step 6: Final answer
   x = 1,715.94