Finding the Fourth Proportional to 2,564.55, 3,539.35 and 1,570.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564.55 : 3,539.35 = 1,570.49 : x
2. Step 2: Convert to fraction form
   2,564.55/3,539.35 = 1,570.49/x
3. Step 3: Cross multiply
   2,564.55x = 3,539.35 × 1,570.49
4. Step 4: Simplify right side
   2,564.55x = 5,558,513.78
5. Step 5: Solve for x
   x = 5,558,513.78/2,564.55
6. Step 6: Final answer
   x = 2,167.44