Finding the Fourth Proportional to 1,425.59, 1,967.27 and 836.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.59 : 1,967.27 = 836.11 : x
2. Step 2: Convert to fraction form
   1,425.59/1,967.27 = 836.11/x
3. Step 3: Cross multiply
   1,425.59x = 1,967.27 × 836.11
4. Step 4: Simplify right side
   1,425.59x = 1,644,854.12
5. Step 5: Solve for x
   x = 1,644,854.12/1,425.59
6. Step 6: Final answer
   x = 1,153.81