Finding the Fourth Proportional to 2,618.61, 3,613.21 and 1,570.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.61 : 3,613.21 = 1,570.69 : x
2. Step 2: Convert to fraction form
   2,618.61/3,613.21 = 1,570.69/x
3. Step 3: Cross multiply
   2,618.61x = 3,613.21 × 1,570.69
4. Step 4: Simplify right side
   2,618.61x = 5,675,232.81
5. Step 5: Solve for x
   x = 5,675,232.81/2,618.61
6. Step 6: Final answer
   x = 2,167.27