Finding the Fourth Proportional to 2,398.89, 3,311.37 and 1,774.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.89 : 3,311.37 = 1,774.44 : x
2. Step 2: Convert to fraction form
   2,398.89/3,311.37 = 1,774.44/x
3. Step 3: Cross multiply
   2,398.89x = 3,311.37 × 1,774.44
4. Step 4: Simplify right side
   2,398.89x = 5,875,827.38
5. Step 5: Solve for x
   x = 5,875,827.38/2,398.89
6. Step 6: Final answer
   x = 2,449.39