Finding the Fourth Proportional to 1,398, 1,928.52 and 1,044.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398 : 1,928.52 = 1,044.48 : x
2. Step 2: Convert to fraction form
   1,398/1,928.52 = 1,044.48/x
3. Step 3: Cross multiply
   1,398x = 1,928.52 × 1,044.48
4. Step 4: Simplify right side
   1,398x = 2,014,300.57
5. Step 5: Solve for x
   x = 2,014,300.57/1,398
6. Step 6: Final answer
   x = 1,440.84