Finding the Fourth Proportional to 1,426.22, 1,968.20 and 836.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.22 : 1,968.20 = 836.81 : x
2. Step 2: Convert to fraction form
   1,426.22/1,968.20 = 836.81/x
3. Step 3: Cross multiply
   1,426.22x = 1,968.20 × 836.81
4. Step 4: Simplify right side
   1,426.22x = 1,646,995.42
5. Step 5: Solve for x
   x = 1,646,995.42/1,426.22
6. Step 6: Final answer
   x = 1,154.80