Finding the Fourth Proportional to 1,383.98, 2,074.15 and 767.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.98 : 2,074.15 = 767.37 : x
2. Step 2: Convert to fraction form
   1,383.98/2,074.15 = 767.37/x
3. Step 3: Cross multiply
   1,383.98x = 2,074.15 × 767.37
4. Step 4: Simplify right side
   1,383.98x = 1,591,638.57
5. Step 5: Solve for x
   x = 1,591,638.57/1,383.98
6. Step 6: Final answer
   x = 1,150.04