Finding the Fourth Proportional to 1,861.32, 2,568.51 and 1,022.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,861.32 : 2,568.51 = 1,022.01 : x
2. Step 2: Convert to fraction form
   1,861.32/2,568.51 = 1,022.01/x
3. Step 3: Cross multiply
   1,861.32x = 2,568.51 × 1,022.01
4. Step 4: Simplify right side
   1,861.32x = 2,625,042.91
5. Step 5: Solve for x
   x = 2,625,042.91/1,861.32
6. Step 6: Final answer
   x = 1,410.31