Finding the Fourth Proportional to 2,209.83, 3,308.31 and 1,282.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.83 : 3,308.31 = 1,282.56 : x
2. Step 2: Convert to fraction form
   2,209.83/3,308.31 = 1,282.56/x
3. Step 3: Cross multiply
   2,209.83x = 3,308.31 × 1,282.56
4. Step 4: Simplify right side
   2,209.83x = 4,243,106.07
5. Step 5: Solve for x
   x = 4,243,106.07/2,209.83
6. Step 6: Final answer
   x = 1,920.11