Finding the Fourth Proportional to 1,162.73, 1,604.88 and 720.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.73 : 1,604.88 = 720.38 : x
2. Step 2: Convert to fraction form
   1,162.73/1,604.88 = 720.38/x
3. Step 3: Cross multiply
   1,162.73x = 1,604.88 × 720.38
4. Step 4: Simplify right side
   1,162.73x = 1,156,122.17
5. Step 5: Solve for x
   x = 1,156,122.17/1,162.73
6. Step 6: Final answer
   x = 994.32