Finding the Fourth Proportional to 1,067.50, 1,472.79 and 625.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.50 : 1,472.79 = 625.42 : x
2. Step 2: Convert to fraction form
   1,067.50/1,472.79 = 625.42/x
3. Step 3: Cross multiply
   1,067.50x = 1,472.79 × 625.42
4. Step 4: Simplify right side
   1,067.50x = 921,112.32
5. Step 5: Solve for x
   x = 921,112.32/1,067.50
6. Step 6: Final answer
   x = 862.87