Finding the Fourth Proportional to 1,084.51, 1,496.53 and 612.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.51 : 1,496.53 = 612.38 : x
2. Step 2: Convert to fraction form
   1,084.51/1,496.53 = 612.38/x
3. Step 3: Cross multiply
   1,084.51x = 1,496.53 × 612.38
4. Step 4: Simplify right side
   1,084.51x = 916,441.98
5. Step 5: Solve for x
   x = 916,441.98/1,084.51
6. Step 6: Final answer
   x = 845.03