Finding the Fourth Proportional to 2,185.98, 3,016.55 and 1,191.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.98 : 3,016.55 = 1,191.26 : x
2. Step 2: Convert to fraction form
   2,185.98/3,016.55 = 1,191.26/x
3. Step 3: Cross multiply
   2,185.98x = 3,016.55 × 1,191.26
4. Step 4: Simplify right side
   2,185.98x = 3,593,474.31
5. Step 5: Solve for x
   x = 3,593,474.31/2,185.98
6. Step 6: Final answer
   x = 1,643.87