Finding the Fourth Proportional to 1,819.56, 2,728.89 and 586.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.56 : 2,728.89 = 586.71 : x
2. Step 2: Convert to fraction form
   1,819.56/2,728.89 = 586.71/x
3. Step 3: Cross multiply
   1,819.56x = 2,728.89 × 586.71
4. Step 4: Simplify right side
   1,819.56x = 1,601,067.05
5. Step 5: Solve for x
   x = 1,601,067.05/1,819.56
6. Step 6: Final answer
   x = 879.92