Finding the Fourth Proportional to 1,084.66, 1,496.78 and 612.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.66 : 1,496.78 = 612.53 : x
2. Step 2: Convert to fraction form
   1,084.66/1,496.78 = 612.53/x
3. Step 3: Cross multiply
   1,084.66x = 1,496.78 × 612.53
4. Step 4: Simplify right side
   1,084.66x = 916,820.02
5. Step 5: Solve for x
   x = 916,820.02/1,084.66
6. Step 6: Final answer
   x = 845.26