Finding the Fourth Proportional to 1,444.69, 1,993.66 and 781.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.69 : 1,993.66 = 781.54 : x
2. Step 2: Convert to fraction form
   1,444.69/1,993.66 = 781.54/x
3. Step 3: Cross multiply
   1,444.69x = 1,993.66 × 781.54
4. Step 4: Simplify right side
   1,444.69x = 1,558,121.03
5. Step 5: Solve for x
   x = 1,558,121.03/1,444.69
6. Step 6: Final answer
   x = 1,078.52