Finding the Fourth Proportional to 1,383.03, 1,908.62 and 753.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.03 : 1,908.62 = 753.60 : x
2. Step 2: Convert to fraction form
   1,383.03/1,908.62 = 753.60/x
3. Step 3: Cross multiply
   1,383.03x = 1,908.62 × 753.60
4. Step 4: Simplify right side
   1,383.03x = 1,438,336.03
5. Step 5: Solve for x
   x = 1,438,336.03/1,383.03
6. Step 6: Final answer
   x = 1,039.99