Finding the Fourth Proportional to 1,084.35, 1,496.30 and 612.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.35 : 1,496.30 = 612.12 : x
2. Step 2: Convert to fraction form
   1,084.35/1,496.30 = 612.12/x
3. Step 3: Cross multiply
   1,084.35x = 1,496.30 × 612.12
4. Step 4: Simplify right side
   1,084.35x = 915,912.10
5. Step 5: Solve for x
   x = 915,912.10/1,084.35
6. Step 6: Final answer
   x = 844.66