Finding the Fourth Proportional to 2,128.44, 2,936.56 and 1,383

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.44 : 2,936.56 = 1,383 : x
2. Step 2: Convert to fraction form
   2,128.44/2,936.56 = 1,383/x
3. Step 3: Cross multiply
   2,128.44x = 2,936.56 × 1,383
4. Step 4: Simplify right side
   2,128.44x = 4,061,262.48
5. Step 5: Solve for x
   x = 4,061,262.48/2,128.44
6. Step 6: Final answer
   x = 1,908.09