Finding the Fourth Proportional to 2,040.50, 3,061.42 and 870.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.50 : 3,061.42 = 870.46 : x
2. Step 2: Convert to fraction form
   2,040.50/3,061.42 = 870.46/x
3. Step 3: Cross multiply
   2,040.50x = 3,061.42 × 870.46
4. Step 4: Simplify right side
   2,040.50x = 2,664,843.65
5. Step 5: Solve for x
   x = 2,664,843.65/2,040.50
6. Step 6: Final answer
   x = 1,305.98