Finding the Fourth Proportional to 1,067.89, 1,473.72 and 625.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,067.89 : 1,473.72 = 625.80 : x
2. Step 2: Convert to fraction form
   1,067.89/1,473.72 = 625.80/x
3. Step 3: Cross multiply
   1,067.89x = 1,473.72 × 625.80
4. Step 4: Simplify right side
   1,067.89x = 922,253.98
5. Step 5: Solve for x
   x = 922,253.98/1,067.89
6. Step 6: Final answer
   x = 863.62