Finding the Fourth Proportional to 1,425.58, 1,967.32 and 836.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.58 : 1,967.32 = 836.12 : x
2. Step 2: Convert to fraction form
   1,425.58/1,967.32 = 836.12/x
3. Step 3: Cross multiply
   1,425.58x = 1,967.32 × 836.12
4. Step 4: Simplify right side
   1,425.58x = 1,644,915.60
5. Step 5: Solve for x
   x = 1,644,915.60/1,425.58
6. Step 6: Final answer
   x = 1,153.86