Finding the Fourth Proportional to 2,216.56, 3,324.78 and 573.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.56 : 3,324.78 = 573.10 : x
2. Step 2: Convert to fraction form
   2,216.56/3,324.78 = 573.10/x
3. Step 3: Cross multiply
   2,216.56x = 3,324.78 × 573.10
4. Step 4: Simplify right side
   2,216.56x = 1,905,431.42
5. Step 5: Solve for x
   x = 1,905,431.42/2,216.56
6. Step 6: Final answer
   x = 859.63