Finding the Fourth Proportional to 1,442.27, 1,989.79 and 945.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.27 : 1,989.79 = 945.19 : x
2. Step 2: Convert to fraction form
   1,442.27/1,989.79 = 945.19/x
3. Step 3: Cross multiply
   1,442.27x = 1,989.79 × 945.19
4. Step 4: Simplify right side
   1,442.27x = 1,880,729.61
5. Step 5: Solve for x
   x = 1,880,729.61/1,442.27
6. Step 6: Final answer
   x = 1,304.01