Finding the Fourth Proportional to 1,084.22, 1,496.28 and 612.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.22 : 1,496.28 = 612.28 : x
2. Step 2: Convert to fraction form
   1,084.22/1,496.28 = 612.28/x
3. Step 3: Cross multiply
   1,084.22x = 1,496.28 × 612.28
4. Step 4: Simplify right side
   1,084.22x = 916,142.32
5. Step 5: Solve for x
   x = 916,142.32/1,084.22
6. Step 6: Final answer
   x = 844.98