Finding the Fourth Proportional to 2,618.72, 3,613.62 and 1,570.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.72 : 3,613.62 = 1,570.58 : x
2. Step 2: Convert to fraction form
   2,618.72/3,613.62 = 1,570.58/x
3. Step 3: Cross multiply
   2,618.72x = 3,613.62 × 1,570.58
4. Step 4: Simplify right side
   2,618.72x = 5,675,479.30
5. Step 5: Solve for x
   x = 5,675,479.30/2,618.72
6. Step 6: Final answer
   x = 2,167.27