Finding the Fourth Proportional to 1,383.51, 1,909.20 and 754.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.51 : 1,909.20 = 754.02 : x
2. Step 2: Convert to fraction form
   1,383.51/1,909.20 = 754.02/x
3. Step 3: Cross multiply
   1,383.51x = 1,909.20 × 754.02
4. Step 4: Simplify right side
   1,383.51x = 1,439,574.98
5. Step 5: Solve for x
   x = 1,439,574.98/1,383.51
6. Step 6: Final answer
   x = 1,040.52