Finding the Fourth Proportional to 2,398.96, 3,310.55 and 1,336.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.96 : 3,310.55 = 1,336.72 : x
2. Step 2: Convert to fraction form
   2,398.96/3,310.55 = 1,336.72/x
3. Step 3: Cross multiply
   2,398.96x = 3,310.55 × 1,336.72
4. Step 4: Simplify right side
   2,398.96x = 4,425,255.16
5. Step 5: Solve for x
   x = 4,425,255.16/2,398.96
6. Step 6: Final answer
   x = 1,844.66