Finding the Fourth Proportional to 1,806.56, 2,709.72 and 573.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806.56 : 2,709.72 = 573.96 : x
2. Step 2: Convert to fraction form
   1,806.56/2,709.72 = 573.96/x
3. Step 3: Cross multiply
   1,806.56x = 2,709.72 × 573.96
4. Step 4: Simplify right side
   1,806.56x = 1,555,270.89
5. Step 5: Solve for x
   x = 1,555,270.89/1,806.56
6. Step 6: Final answer
   x = 860.90