Finding the Fourth Proportional to 2,578.82, 3,558.78 and 1,570.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.82 : 3,558.78 = 1,570.23 : x
2. Step 2: Convert to fraction form
   2,578.82/3,558.78 = 1,570.23/x
3. Step 3: Cross multiply
   2,578.82x = 3,558.78 × 1,570.23
4. Step 4: Simplify right side
   2,578.82x = 5,588,103.12
5. Step 5: Solve for x
   x = 5,588,103.12/2,578.82
6. Step 6: Final answer
   x = 2,166.93