Finding the Fourth Proportional to 1,425.45, 1,967.28 and 836.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.45 : 1,967.28 = 836.19 : x
2. Step 2: Convert to fraction form
   1,425.45/1,967.28 = 836.19/x
3. Step 3: Cross multiply
   1,425.45x = 1,967.28 × 836.19
4. Step 4: Simplify right side
   1,425.45x = 1,645,019.86
5. Step 5: Solve for x
   x = 1,645,019.86/1,425.45
6. Step 6: Final answer
   x = 1,154.04