Finding the Fourth Proportional to 2,578.50, 3,867.69 and 729.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.50 : 3,867.69 = 729.58 : x
2. Step 2: Convert to fraction form
   2,578.50/3,867.69 = 729.58/x
3. Step 3: Cross multiply
   2,578.50x = 3,867.69 × 729.58
4. Step 4: Simplify right side
   2,578.50x = 2,821,789.27
5. Step 5: Solve for x
   x = 2,821,789.27/2,578.50
6. Step 6: Final answer
   x = 1,094.35