Finding the Fourth Proportional to 1,426.17, 1,968.13 and 836.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.17 : 1,968.13 = 836.71 : x
2. Step 2: Convert to fraction form
   1,426.17/1,968.13 = 836.71/x
3. Step 3: Cross multiply
   1,426.17x = 1,968.13 × 836.71
4. Step 4: Simplify right side
   1,426.17x = 1,646,754.05
5. Step 5: Solve for x
   x = 1,646,754.05/1,426.17
6. Step 6: Final answer
   x = 1,154.67