Finding the Fourth Proportional to 2,040.27, 3,061.59 and 870.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.27 : 3,061.59 = 870.21 : x
2. Step 2: Convert to fraction form
   2,040.27/3,061.59 = 870.21/x
3. Step 3: Cross multiply
   2,040.27x = 3,061.59 × 870.21
4. Step 4: Simplify right side
   2,040.27x = 2,664,226.23
5. Step 5: Solve for x
   x = 2,664,226.23/2,040.27
6. Step 6: Final answer
   x = 1,305.82