Finding the Fourth Proportional to 2,164.22, 2,986.61 and 1,169.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,164.22 : 2,986.61 = 1,169.49 : x
2. Step 2: Convert to fraction form
   2,164.22/2,986.61 = 1,169.49/x
3. Step 3: Cross multiply
   2,164.22x = 2,986.61 × 1,169.49
4. Step 4: Simplify right side
   2,164.22x = 3,492,813.45
5. Step 5: Solve for x
   x = 3,492,813.45/2,164.22
6. Step 6: Final answer
   x = 1,613.89