Finding the Fourth Proportional to 2,859.92, 4,287.42 and 1,103.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,859.92 : 4,287.42 = 1,103.96 : x
2. Step 2: Convert to fraction form
   2,859.92/4,287.42 = 1,103.96/x
3. Step 3: Cross multiply
   2,859.92x = 4,287.42 × 1,103.96
4. Step 4: Simplify right side
   2,859.92x = 4,733,140.18
5. Step 5: Solve for x
   x = 4,733,140.18/2,859.92
6. Step 6: Final answer
   x = 1,654.99