Finding the Fourth Proportional to 806.90, 1,215.59 and 796.82

Step by Step Solution

1. Step 1: Write the proportion equation
   806.90 : 1,215.59 = 796.82 : x
2. Step 2: Convert to fraction form
   806.90/1,215.59 = 796.82/x
3. Step 3: Cross multiply
   806.90x = 1,215.59 × 796.82
4. Step 4: Simplify right side
   806.90x = 968,602.34
5. Step 5: Solve for x
   x = 968,602.34/806.90
6. Step 6: Final answer
   x = 1,200.41