Finding the Fourth Proportional to 1,442.25, 1,989.57 and 944.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.25 : 1,989.57 = 944.91 : x
2. Step 2: Convert to fraction form
   1,442.25/1,989.57 = 944.91/x
3. Step 3: Cross multiply
   1,442.25x = 1,989.57 × 944.91
4. Step 4: Simplify right side
   1,442.25x = 1,879,964.59
5. Step 5: Solve for x
   x = 1,879,964.59/1,442.25
6. Step 6: Final answer
   x = 1,303.49