Finding the Fourth Proportional to 2,209.81, 3,310.82 and 1,167.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.81 : 3,310.82 = 1,167.52 : x
2. Step 2: Convert to fraction form
   2,209.81/3,310.82 = 1,167.52/x
3. Step 3: Cross multiply
   2,209.81x = 3,310.82 × 1,167.52
4. Step 4: Simplify right side
   2,209.81x = 3,865,448.57
5. Step 5: Solve for x
   x = 3,865,448.57/2,209.81
6. Step 6: Final answer
   x = 1,749.22