Finding the Fourth Proportional to 2,863.10, 4,292.15 and 1,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.10 : 4,292.15 = 1,109.30 : x
2. Step 2: Convert to fraction form
   2,863.10/4,292.15 = 1,109.30/x
3. Step 3: Cross multiply
   2,863.10x = 4,292.15 × 1,109.30
4. Step 4: Simplify right side
   2,863.10x = 4,761,282.00
5. Step 5: Solve for x
   x = 4,761,282.00/2,863.10
6. Step 6: Final answer
   x = 1,662.98