Finding the Fourth Proportional to 2,554.39, 3,828.34 and 1,398.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.39 : 3,828.34 = 1,398.79 : x
2. Step 2: Convert to fraction form
   2,554.39/3,828.34 = 1,398.79/x
3. Step 3: Cross multiply
   2,554.39x = 3,828.34 × 1,398.79
4. Step 4: Simplify right side
   2,554.39x = 5,355,043.71
5. Step 5: Solve for x
   x = 5,355,043.71/2,554.39
6. Step 6: Final answer
   x = 2,096.41