Finding the Fourth Proportional to 2,040.82, 3,061.40 and 579.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.82 : 3,061.40 = 579.99 : x
2. Step 2: Convert to fraction form
   2,040.82/3,061.40 = 579.99/x
3. Step 3: Cross multiply
   2,040.82x = 3,061.40 × 579.99
4. Step 4: Simplify right side
   2,040.82x = 1,775,564.14
5. Step 5: Solve for x
   x = 1,775,564.14/2,040.82
6. Step 6: Final answer
   x = 870.02