Finding the Fourth Proportional to 2,081.47, 2,872.69 and 1,185.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.47 : 2,872.69 = 1,185.44 : x
2. Step 2: Convert to fraction form
   2,081.47/2,872.69 = 1,185.44/x
3. Step 3: Cross multiply
   2,081.47x = 2,872.69 × 1,185.44
4. Step 4: Simplify right side
   2,081.47x = 3,405,387.64
5. Step 5: Solve for x
   x = 3,405,387.64/2,081.47
6. Step 6: Final answer
   x = 1,636.05