Finding the Fourth Proportional to 1,383.35, 1,906.13 and 940.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.35 : 1,906.13 = 940.48 : x
2. Step 2: Convert to fraction form
   1,383.35/1,906.13 = 940.48/x
3. Step 3: Cross multiply
   1,383.35x = 1,906.13 × 940.48
4. Step 4: Simplify right side
   1,383.35x = 1,792,674.73
5. Step 5: Solve for x
   x = 1,792,674.73/1,383.35
6. Step 6: Final answer
   x = 1,295.90