Finding the Fourth Proportional to 2,581.06, 3,868.94 and 1,020.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.06 : 3,868.94 = 1,020.43 : x
2. Step 2: Convert to fraction form
   2,581.06/3,868.94 = 1,020.43/x
3. Step 3: Cross multiply
   2,581.06x = 3,868.94 × 1,020.43
4. Step 4: Simplify right side
   2,581.06x = 3,947,985.00
5. Step 5: Solve for x
   x = 3,947,985.00/2,581.06
6. Step 6: Final answer
   x = 1,529.60