Finding the Fourth Proportional to 2,615.82, 3,923.88 and 767.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.82 : 3,923.88 = 767.10 : x
2. Step 2: Convert to fraction form
   2,615.82/3,923.88 = 767.10/x
3. Step 3: Cross multiply
   2,615.82x = 3,923.88 × 767.10
4. Step 4: Simplify right side
   2,615.82x = 3,010,008.35
5. Step 5: Solve for x
   x = 3,010,008.35/2,615.82
6. Step 6: Final answer
   x = 1,150.69