Finding the Fourth Proportional to 2,185.80, 3,016.41 and 1,191.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.80 : 3,016.41 = 1,191.08 : x
2. Step 2: Convert to fraction form
   2,185.80/3,016.41 = 1,191.08/x
3. Step 3: Cross multiply
   2,185.80x = 3,016.41 × 1,191.08
4. Step 4: Simplify right side
   2,185.80x = 3,592,770.54
5. Step 5: Solve for x
   x = 3,592,770.54/2,185.80
6. Step 6: Final answer
   x = 1,643.69