Finding the Fourth Proportional to 2,180.26, 3,008.79 and 1,185.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.26 : 3,008.79 = 1,185.55 : x
2. Step 2: Convert to fraction form
   2,180.26/3,008.79 = 1,185.55/x
3. Step 3: Cross multiply
   2,180.26x = 3,008.79 × 1,185.55
4. Step 4: Simplify right side
   2,180.26x = 3,567,070.98
5. Step 5: Solve for x
   x = 3,567,070.98/2,180.26
6. Step 6: Final answer
   x = 1,636.08