Finding the Fourth Proportional to 2,645.84, 3,969.32 and 796.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.84 : 3,969.32 = 796.80 : x
2. Step 2: Convert to fraction form
   2,645.84/3,969.32 = 796.80/x
3. Step 3: Cross multiply
   2,645.84x = 3,969.32 × 796.80
4. Step 4: Simplify right side
   2,645.84x = 3,162,754.18
5. Step 5: Solve for x
   x = 3,162,754.18/2,645.84
6. Step 6: Final answer
   x = 1,195.37