Finding the Fourth Proportional to 1,067.38, 1,598.88 and 1,054.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.38 : 1,598.88 = 1,054.42 : x
2. Step 2: Convert to fraction form
   1,067.38/1,598.88 = 1,054.42/x
3. Step 3: Cross multiply
   1,067.38x = 1,598.88 × 1,054.42
4. Step 4: Simplify right side
   1,067.38x = 1,685,891.05
5. Step 5: Solve for x
   x = 1,685,891.05/1,067.38
6. Step 6: Final answer
   x = 1,579.47