Finding the Fourth Proportional to 1,238.73, 1,853.61 and 1,067.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238.73 : 1,853.61 = 1,067.43 : x
2. Step 2: Convert to fraction form
   1,238.73/1,853.61 = 1,067.43/x
3. Step 3: Cross multiply
   1,238.73x = 1,853.61 × 1,067.43
4. Step 4: Simplify right side
   1,238.73x = 1,978,598.92
5. Step 5: Solve for x
   x = 1,978,598.92/1,238.73
6. Step 6: Final answer
   x = 1,597.28