Finding the Fourth Proportional to 1,444.58, 1,993.52 and 781.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.58 : 1,993.52 = 781.43 : x
2. Step 2: Convert to fraction form
   1,444.58/1,993.52 = 781.43/x
3. Step 3: Cross multiply
   1,444.58x = 1,993.52 × 781.43
4. Step 4: Simplify right side
   1,444.58x = 1,557,796.33
5. Step 5: Solve for x
   x = 1,557,796.33/1,444.58
6. Step 6: Final answer
   x = 1,078.37