Finding the Fourth Proportional to 2,396.89, 3,307.59 and 1,689.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,396.89 : 3,307.59 = 1,689.01 : x
2. Step 2: Convert to fraction form
   2,396.89/3,307.59 = 1,689.01/x
3. Step 3: Cross multiply
   2,396.89x = 3,307.59 × 1,689.01
4. Step 4: Simplify right side
   2,396.89x = 5,586,552.59
5. Step 5: Solve for x
   x = 5,586,552.59/2,396.89
6. Step 6: Final answer
   x = 2,330.75