Finding the Fourth Proportional to 2,209.32, 3,308.63 and 1,170.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.32 : 3,308.63 = 1,170.23 : x
2. Step 2: Convert to fraction form
   2,209.32/3,308.63 = 1,170.23/x
3. Step 3: Cross multiply
   2,209.32x = 3,308.63 × 1,170.23
4. Step 4: Simplify right side
   2,209.32x = 3,871,835.69
5. Step 5: Solve for x
   x = 3,871,835.69/2,209.32
6. Step 6: Final answer
   x = 1,752.50