Finding the Fourth Proportional to 1,442.25, 1,990.17 and 944.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.25 : 1,990.17 = 944.10 : x
2. Step 2: Convert to fraction form
   1,442.25/1,990.17 = 944.10/x
3. Step 3: Cross multiply
   1,442.25x = 1,990.17 × 944.10
4. Step 4: Simplify right side
   1,442.25x = 1,878,919.50
5. Step 5: Solve for x
   x = 1,878,919.50/1,442.25
6. Step 6: Final answer
   x = 1,302.77