Finding the Fourth Proportional to 2,107.22, 2,904.53 and 1,686.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.22 : 2,904.53 = 1,686.83 : x
2. Step 2: Convert to fraction form
   2,107.22/2,904.53 = 1,686.83/x
3. Step 3: Cross multiply
   2,107.22x = 2,904.53 × 1,686.83
4. Step 4: Simplify right side
   2,107.22x = 4,899,425.38
5. Step 5: Solve for x
   x = 4,899,425.38/2,107.22
6. Step 6: Final answer
   x = 2,325.07