Finding the Fourth Proportional to 1,426.02, 1,967.89 and 836.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.02 : 1,967.89 = 836.90 : x
2. Step 2: Convert to fraction form
   1,426.02/1,967.89 = 836.90/x
3. Step 3: Cross multiply
   1,426.02x = 1,967.89 × 836.90
4. Step 4: Simplify right side
   1,426.02x = 1,646,927.14
5. Step 5: Solve for x
   x = 1,646,927.14/1,426.02
6. Step 6: Final answer
   x = 1,154.91