Finding the Fourth Proportional to 2,040.05, 3,059.42 and 870.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.05 : 3,059.42 = 870.03 : x
2. Step 2: Convert to fraction form
   2,040.05/3,059.42 = 870.03/x
3. Step 3: Cross multiply
   2,040.05x = 3,059.42 × 870.03
4. Step 4: Simplify right side
   2,040.05x = 2,661,782.83
5. Step 5: Solve for x
   x = 2,661,782.83/2,040.05
6. Step 6: Final answer
   x = 1,304.77