Finding the Fourth Proportional to 1,084.55, 1,496.81 and 612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.55 : 1,496.81 = 612.50 : x
2. Step 2: Convert to fraction form
   1,084.55/1,496.81 = 612.50/x
3. Step 3: Cross multiply
   1,084.55x = 1,496.81 × 612.50
4. Step 4: Simplify right side
   1,084.55x = 916,793.06
5. Step 5: Solve for x
   x = 916,793.06/1,084.55
6. Step 6: Final answer
   x = 845.32