Finding the Fourth Proportional to 1,425.63, 1,967.39 and 836.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.63 : 1,967.39 = 836.18 : x
2. Step 2: Convert to fraction form
   1,425.63/1,967.39 = 836.18/x
3. Step 3: Cross multiply
   1,425.63x = 1,967.39 × 836.18
4. Step 4: Simplify right side
   1,425.63x = 1,645,078.15
5. Step 5: Solve for x
   x = 1,645,078.15/1,425.63
6. Step 6: Final answer
   x = 1,153.93