Finding the Fourth Proportional to 2,579.98, 3,868.71 and 936.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.98 : 3,868.71 = 936.28 : x
2. Step 2: Convert to fraction form
   2,579.98/3,868.71 = 936.28/x
3. Step 3: Cross multiply
   2,579.98x = 3,868.71 × 936.28
4. Step 4: Simplify right side
   2,579.98x = 3,622,195.80
5. Step 5: Solve for x
   x = 3,622,195.80/2,579.98
6. Step 6: Final answer
   x = 1,403.96