Finding the Fourth Proportional to 2,398.34, 3,310.82 and 1,690.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.34 : 3,310.82 = 1,690.76 : x
2. Step 2: Convert to fraction form
   2,398.34/3,310.82 = 1,690.76/x
3. Step 3: Cross multiply
   2,398.34x = 3,310.82 × 1,690.76
4. Step 4: Simplify right side
   2,398.34x = 5,597,799.07
5. Step 5: Solve for x
   x = 5,597,799.07/2,398.34
6. Step 6: Final answer
   x = 2,334.03