Finding the Fourth Proportional to 2,578.05, 3,866.83 and 934.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.05 : 3,866.83 = 934.53 : x
2. Step 2: Convert to fraction form
   2,578.05/3,866.83 = 934.53/x
3. Step 3: Cross multiply
   2,578.05x = 3,866.83 × 934.53
4. Step 4: Simplify right side
   2,578.05x = 3,613,668.64
5. Step 5: Solve for x
   x = 3,613,668.64/2,578.05
6. Step 6: Final answer
   x = 1,401.71