Finding the Fourth Proportional to 2,616.42, 3,923.94 and 767.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.42 : 3,923.94 = 767.04 : x
2. Step 2: Convert to fraction form
   2,616.42/3,923.94 = 767.04/x
3. Step 3: Cross multiply
   2,616.42x = 3,923.94 × 767.04
4. Step 4: Simplify right side
   2,616.42x = 3,009,818.94
5. Step 5: Solve for x
   x = 3,009,818.94/2,616.42
6. Step 6: Final answer
   x = 1,150.36