Finding the Fourth Proportional to 2,859.72, 4,287.56 and 1,103.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,859.72 : 4,287.56 = 1,103.25 : x
2. Step 2: Convert to fraction form
   2,859.72/4,287.56 = 1,103.25/x
3. Step 3: Cross multiply
   2,859.72x = 4,287.56 × 1,103.25
4. Step 4: Simplify right side
   2,859.72x = 4,730,245.05
5. Step 5: Solve for x
   x = 4,730,245.05/2,859.72
6. Step 6: Final answer
   x = 1,654.09