Finding the Fourth Proportional to 2,435.94, 3,359.76 and 1,689.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.94 : 3,359.76 = 1,689.90 : x
2. Step 2: Convert to fraction form
   2,435.94/3,359.76 = 1,689.90/x
3. Step 3: Cross multiply
   2,435.94x = 3,359.76 × 1,689.90
4. Step 4: Simplify right side
   2,435.94x = 5,677,658.42
5. Step 5: Solve for x
   x = 5,677,658.42/2,435.94
6. Step 6: Final answer
   x = 2,330.79