Finding the Fourth Proportional to 2,646.42, 3,970.04 and 797.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.42 : 3,970.04 = 797.30 : x
2. Step 2: Convert to fraction form
   2,646.42/3,970.04 = 797.30/x
3. Step 3: Cross multiply
   2,646.42x = 3,970.04 × 797.30
4. Step 4: Simplify right side
   2,646.42x = 3,165,289.06
5. Step 5: Solve for x
   x = 3,165,289.06/2,646.42
6. Step 6: Final answer
   x = 1,196.06