Finding the Fourth Proportional to 2,861.10, 4,291.98 and 1,105.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.10 : 4,291.98 = 1,105.69 : x
2. Step 2: Convert to fraction form
   2,861.10/4,291.98 = 1,105.69/x
3. Step 3: Cross multiply
   2,861.10x = 4,291.98 × 1,105.69
4. Step 4: Simplify right side
   2,861.10x = 4,745,599.37
5. Step 5: Solve for x
   x = 4,745,599.37/2,861.10
6. Step 6: Final answer
   x = 1,658.66