Finding the Fourth Proportional to 1,426.06, 1,967.40 and 836.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.06 : 1,967.40 = 836.56 : x
2. Step 2: Convert to fraction form
   1,426.06/1,967.40 = 836.56/x
3. Step 3: Cross multiply
   1,426.06x = 1,967.40 × 836.56
4. Step 4: Simplify right side
   1,426.06x = 1,645,848.14
5. Step 5: Solve for x
   x = 1,645,848.14/1,426.06
6. Step 6: Final answer
   x = 1,154.12