Finding the Fourth Proportional to 2,187.75, 3,018.24 and 1,442.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.75 : 3,018.24 = 1,442.10 : x
2. Step 2: Convert to fraction form
   2,187.75/3,018.24 = 1,442.10/x
3. Step 3: Cross multiply
   2,187.75x = 3,018.24 × 1,442.10
4. Step 4: Simplify right side
   2,187.75x = 4,352,603.90
5. Step 5: Solve for x
   x = 4,352,603.90/2,187.75
6. Step 6: Final answer
   x = 1,989.53