Finding the Fourth Proportional to 2,180.49, 3,009.04 and 1,185.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.49 : 3,009.04 = 1,185.76 : x
2. Step 2: Convert to fraction form
   2,180.49/3,009.04 = 1,185.76/x
3. Step 3: Cross multiply
   2,180.49x = 3,009.04 × 1,185.76
4. Step 4: Simplify right side
   2,180.49x = 3,567,993.34
5. Step 5: Solve for x
   x = 3,567,993.34/2,180.49
6. Step 6: Final answer
   x = 1,636.33