Finding the Fourth Proportional to 1,960.73, 2,942.72 and 807.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.73 : 2,942.72 = 807.29 : x
2. Step 2: Convert to fraction form
   1,960.73/2,942.72 = 807.29/x
3. Step 3: Cross multiply
   1,960.73x = 2,942.72 × 807.29
4. Step 4: Simplify right side
   1,960.73x = 2,375,624.39
5. Step 5: Solve for x
   x = 2,375,624.39/1,960.73
6. Step 6: Final answer
   x = 1,211.60