Finding the Fourth Proportional to 2,446.16, 3,374.72 and 1,398

Step by Step Solution

1. Step 1: Write the proportion equation
   2,446.16 : 3,374.72 = 1,398 : x
2. Step 2: Convert to fraction form
   2,446.16/3,374.72 = 1,398/x
3. Step 3: Cross multiply
   2,446.16x = 3,374.72 × 1,398
4. Step 4: Simplify right side
   2,446.16x = 4,717,858.56
5. Step 5: Solve for x
   x = 4,717,858.56/2,446.16
6. Step 6: Final answer
   x = 1,928.68