Finding the Fourth Proportional to 2,107.19, 2,908.50 and 1,222.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.19 : 2,908.50 = 1,222.82 : x
2. Step 2: Convert to fraction form
   2,107.19/2,908.50 = 1,222.82/x
3. Step 3: Cross multiply
   2,107.19x = 2,908.50 × 1,222.82
4. Step 4: Simplify right side
   2,107.19x = 3,556,557.43
5. Step 5: Solve for x
   x = 3,556,557.43/2,107.19
6. Step 6: Final answer
   x = 1,687.82