Finding the Fourth Proportional to 2,564.49, 3,539.58 and 1,570.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,564.49 : 3,539.58 = 1,570.59 : x
2. Step 2: Convert to fraction form
   2,564.49/3,539.58 = 1,570.59/x
3. Step 3: Cross multiply
   2,564.49x = 3,539.58 × 1,570.59
4. Step 4: Simplify right side
   2,564.49x = 5,559,228.95
5. Step 5: Solve for x
   x = 5,559,228.95/2,564.49
6. Step 6: Final answer
   x = 2,167.77