Finding the Fourth Proportional to 2,186.24, 3,017.12 and 1,191.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.24 : 3,017.12 = 1,191.49 : x
2. Step 2: Convert to fraction form
   2,186.24/3,017.12 = 1,191.49/x
3. Step 3: Cross multiply
   2,186.24x = 3,017.12 × 1,191.49
4. Step 4: Simplify right side
   2,186.24x = 3,594,854.81
5. Step 5: Solve for x
   x = 3,594,854.81/2,186.24
6. Step 6: Final answer
   x = 1,644.31