Finding the Fourth Proportional to 2,040.56, 3,060.72 and 579.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.56 : 3,060.72 = 579.63 : x
2. Step 2: Convert to fraction form
   2,040.56/3,060.72 = 579.63/x
3. Step 3: Cross multiply
   2,040.56x = 3,060.72 × 579.63
4. Step 4: Simplify right side
   2,040.56x = 1,774,085.13
5. Step 5: Solve for x
   x = 1,774,085.13/2,040.56
6. Step 6: Final answer
   x = 869.41