Finding the Fourth Proportional to 2,186.50, 3,017.33 and 1,191.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.50 : 3,017.33 = 1,191.79 : x
2. Step 2: Convert to fraction form
   2,186.50/3,017.33 = 1,191.79/x
3. Step 3: Cross multiply
   2,186.50x = 3,017.33 × 1,191.79
4. Step 4: Simplify right side
   2,186.50x = 3,596,023.72
5. Step 5: Solve for x
   x = 3,596,023.72/2,186.50
6. Step 6: Final answer
   x = 1,644.65