Finding the Fourth Proportional to 2,185.73, 3,016.20 and 1,191.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.73 : 3,016.20 = 1,191.01 : x
2. Step 2: Convert to fraction form
   2,185.73/3,016.20 = 1,191.01/x
3. Step 3: Cross multiply
   2,185.73x = 3,016.20 × 1,191.01
4. Step 4: Simplify right side
   2,185.73x = 3,592,309.28
5. Step 5: Solve for x
   x = 3,592,309.28/2,185.73
6. Step 6: Final answer
   x = 1,643.53