Finding the Fourth Proportional to 1,425.62, 1,967.56 and 836.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.62 : 1,967.56 = 836.35 : x
2. Step 2: Convert to fraction form
   1,425.62/1,967.56 = 836.35/x
3. Step 3: Cross multiply
   1,425.62x = 1,967.56 × 836.35
4. Step 4: Simplify right side
   1,425.62x = 1,645,561.80
5. Step 5: Solve for x
   x = 1,645,561.80/1,425.62
6. Step 6: Final answer
   x = 1,154.28