Finding the Fourth Proportional to 1,442.30, 1,989.68 and 944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.30 : 1,989.68 = 944.72 : x
2. Step 2: Convert to fraction form
   1,442.30/1,989.68 = 944.72/x
3. Step 3: Cross multiply
   1,442.30x = 1,989.68 × 944.72
4. Step 4: Simplify right side
   1,442.30x = 1,879,697.83
5. Step 5: Solve for x
   x = 1,879,697.83/1,442.30
6. Step 6: Final answer
   x = 1,303.26