Finding the Fourth Proportional to 2,104.76, 2,900.72 and 1,686.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.76 : 2,900.72 = 1,686.49 : x
2. Step 2: Convert to fraction form
   2,104.76/2,900.72 = 1,686.49/x
3. Step 3: Cross multiply
   2,104.76x = 2,900.72 × 1,686.49
4. Step 4: Simplify right side
   2,104.76x = 4,892,032.24
5. Step 5: Solve for x
   x = 4,892,032.24/2,104.76
6. Step 6: Final answer
   x = 2,324.27