Finding the Fourth Proportional to 1,444.73, 1,993.07 and 978.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.73 : 1,993.07 = 978.17 : x
2. Step 2: Convert to fraction form
   1,444.73/1,993.07 = 978.17/x
3. Step 3: Cross multiply
   1,444.73x = 1,993.07 × 978.17
4. Step 4: Simplify right side
   1,444.73x = 1,949,553.76
5. Step 5: Solve for x
   x = 1,949,553.76/1,444.73
6. Step 6: Final answer
   x = 1,349.43