Finding the Fourth Proportional to 1,442.10, 1,991.18 and 944.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.10 : 1,991.18 = 944.56 : x
2. Step 2: Convert to fraction form
   1,442.10/1,991.18 = 944.56/x
3. Step 3: Cross multiply
   1,442.10x = 1,991.18 × 944.56
4. Step 4: Simplify right side
   1,442.10x = 1,880,793.83
5. Step 5: Solve for x
   x = 1,880,793.83/1,442.10
6. Step 6: Final answer
   x = 1,304.20