Finding the Fourth Proportional to 1,002.73, 1,385.46 and 722.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.73 : 1,385.46 = 722.41 : x
2. Step 2: Convert to fraction form
   1,002.73/1,385.46 = 722.41/x
3. Step 3: Cross multiply
   1,002.73x = 1,385.46 × 722.41
4. Step 4: Simplify right side
   1,002.73x = 1,000,870.16
5. Step 5: Solve for x
   x = 1,000,870.16/1,002.73
6. Step 6: Final answer
   x = 998.15