Finding the Fourth Proportional to 1,084.29, 1,496.31 and 612.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.29 : 1,496.31 = 612.18 : x
2. Step 2: Convert to fraction form
   1,084.29/1,496.31 = 612.18/x
3. Step 3: Cross multiply
   1,084.29x = 1,496.31 × 612.18
4. Step 4: Simplify right side
   1,084.29x = 916,011.06
5. Step 5: Solve for x
   x = 916,011.06/1,084.29
6. Step 6: Final answer
   x = 844.80