Finding the Fourth Proportional to 2,065.95, 3,099.21 and 767.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.95 : 3,099.21 = 767.31 : x
2. Step 2: Convert to fraction form
   2,065.95/3,099.21 = 767.31/x
3. Step 3: Cross multiply
   2,065.95x = 3,099.21 × 767.31
4. Step 4: Simplify right side
   2,065.95x = 2,378,054.83
5. Step 5: Solve for x
   x = 2,378,054.83/2,065.95
6. Step 6: Final answer
   x = 1,151.07