Finding the Fourth Proportional to 1,076.82, 1,484.50 and 722.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.82 : 1,484.50 = 722.80 : x
2. Step 2: Convert to fraction form
   1,076.82/1,484.50 = 722.80/x
3. Step 3: Cross multiply
   1,076.82x = 1,484.50 × 722.80
4. Step 4: Simplify right side
   1,076.82x = 1,072,996.60
5. Step 5: Solve for x
   x = 1,072,996.60/1,076.82
6. Step 6: Final answer
   x = 996.45