Finding the Fourth Proportional to 2,040.84, 3,061.38 and 579.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.84 : 3,061.38 = 579.88 : x
2. Step 2: Convert to fraction form
   2,040.84/3,061.38 = 579.88/x
3. Step 3: Cross multiply
   2,040.84x = 3,061.38 × 579.88
4. Step 4: Simplify right side
   2,040.84x = 1,775,214.83
5. Step 5: Solve for x
   x = 1,775,214.83/2,040.84
6. Step 6: Final answer
   x = 869.85