Finding the Fourth Proportional to 1,362.78, 1,879.62 and 1,067.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.78 : 1,879.62 = 1,067.46 : x
2. Step 2: Convert to fraction form
   1,362.78/1,879.62 = 1,067.46/x
3. Step 3: Cross multiply
   1,362.78x = 1,879.62 × 1,067.46
4. Step 4: Simplify right side
   1,362.78x = 2,006,419.17
5. Step 5: Solve for x
   x = 2,006,419.17/1,362.78
6. Step 6: Final answer
   x = 1,472.30