Finding the Fourth Proportional to 2,209.82, 3,315.52 and 1,169.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.82 : 3,315.52 = 1,169.86 : x
2. Step 2: Convert to fraction form
   2,209.82/3,315.52 = 1,169.86/x
3. Step 3: Cross multiply
   2,209.82x = 3,315.52 × 1,169.86
4. Step 4: Simplify right side
   2,209.82x = 3,878,694.23
5. Step 5: Solve for x
   x = 3,878,694.23/2,209.82
6. Step 6: Final answer
   x = 1,755.21