Finding the Fourth Proportional to 2,559.33, 3,530.25 and 1,564.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.33 : 3,530.25 = 1,564.20 : x
2. Step 2: Convert to fraction form
   2,559.33/3,530.25 = 1,564.20/x
3. Step 3: Cross multiply
   2,559.33x = 3,530.25 × 1,564.20
4. Step 4: Simplify right side
   2,559.33x = 5,522,017.05
5. Step 5: Solve for x
   x = 5,522,017.05/2,559.33
6. Step 6: Final answer
   x = 2,157.60