Finding the Fourth Proportional to 1,861.55, 2,568.92 and 1,022.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.55 : 2,568.92 = 1,022.25 : x
2. Step 2: Convert to fraction form
   1,861.55/2,568.92 = 1,022.25/x
3. Step 3: Cross multiply
   1,861.55x = 2,568.92 × 1,022.25
4. Step 4: Simplify right side
   1,861.55x = 2,626,078.47
5. Step 5: Solve for x
   x = 2,626,078.47/1,861.55
6. Step 6: Final answer
   x = 1,410.69