Finding the Fourth Proportional to 1,442.54, 2,165.67 and 1,238.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.54 : 2,165.67 = 1,238.42 : x
2. Step 2: Convert to fraction form
   1,442.54/2,165.67 = 1,238.42/x
3. Step 3: Cross multiply
   1,442.54x = 2,165.67 × 1,238.42
4. Step 4: Simplify right side
   1,442.54x = 2,682,009.04
5. Step 5: Solve for x
   x = 2,682,009.04/1,442.54
6. Step 6: Final answer
   x = 1,859.23