Finding the Fourth Proportional to 2,578.33, 3,868.91 and 1,117.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.33 : 3,868.91 = 1,117.49 : x
2. Step 2: Convert to fraction form
   2,578.33/3,868.91 = 1,117.49/x
3. Step 3: Cross multiply
   2,578.33x = 3,868.91 × 1,117.49
4. Step 4: Simplify right side
   2,578.33x = 4,323,462.65
5. Step 5: Solve for x
   x = 4,323,462.65/2,578.33
6. Step 6: Final answer
   x = 1,676.85