Finding the Fourth Proportional to 2,040.56, 3,061.32 and 579.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.56 : 3,061.32 = 579.68 : x
2. Step 2: Convert to fraction form
   2,040.56/3,061.32 = 579.68/x
3. Step 3: Cross multiply
   2,040.56x = 3,061.32 × 579.68
4. Step 4: Simplify right side
   2,040.56x = 1,774,567.77
5. Step 5: Solve for x
   x = 1,774,567.77/2,040.56
6. Step 6: Final answer
   x = 869.65