Finding the Fourth Proportional to 2,578.52, 3,868.01 and 935.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.52 : 3,868.01 = 935.07 : x
2. Step 2: Convert to fraction form
   2,578.52/3,868.01 = 935.07/x
3. Step 3: Cross multiply
   2,578.52x = 3,868.01 × 935.07
4. Step 4: Simplify right side
   2,578.52x = 3,616,855.44
5. Step 5: Solve for x
   x = 3,616,855.44/2,578.52
6. Step 6: Final answer
   x = 1,402.69