Finding the Fourth Proportional to 2,868.34, 3,957.83 and 1,689.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.34 : 3,957.83 = 1,689.25 : x
2. Step 2: Convert to fraction form
   2,868.34/3,957.83 = 1,689.25/x
3. Step 3: Cross multiply
   2,868.34x = 3,957.83 × 1,689.25
4. Step 4: Simplify right side
   2,868.34x = 6,685,748.76
5. Step 5: Solve for x
   x = 6,685,748.76/2,868.34
6. Step 6: Final answer
   x = 2,330.88