Finding the Fourth Proportional to 2,187.37, 3,018.46 and 1,243.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.37 : 3,018.46 = 1,243.10 : x
2. Step 2: Convert to fraction form
   2,187.37/3,018.46 = 1,243.10/x
3. Step 3: Cross multiply
   2,187.37x = 3,018.46 × 1,243.10
4. Step 4: Simplify right side
   2,187.37x = 3,752,247.63
5. Step 5: Solve for x
   x = 3,752,247.63/2,187.37
6. Step 6: Final answer
   x = 1,715.42