Finding the Fourth Proportional to 2,106.24, 2,906.04 and 1,320.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.24 : 2,906.04 = 1,320.32 : x
2. Step 2: Convert to fraction form
   2,106.24/2,906.04 = 1,320.32/x
3. Step 3: Cross multiply
   2,106.24x = 2,906.04 × 1,320.32
4. Step 4: Simplify right side
   2,106.24x = 3,836,902.73
5. Step 5: Solve for x
   x = 3,836,902.73/2,106.24
6. Step 6: Final answer
   x = 1,821.68