Finding the Fourth Proportional to 2,180.39, 3,008.90 and 1,185.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.39 : 3,008.90 = 1,185.69 : x
2. Step 2: Convert to fraction form
   2,180.39/3,008.90 = 1,185.69/x
3. Step 3: Cross multiply
   2,180.39x = 3,008.90 × 1,185.69
4. Step 4: Simplify right side
   2,180.39x = 3,567,613.29
5. Step 5: Solve for x
   x = 3,567,613.29/2,180.39
6. Step 6: Final answer
   x = 1,636.22