Finding the Fourth Proportional to 1,444.82, 1,993.85 and 781.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.82 : 1,993.85 = 781.67 : x
2. Step 2: Convert to fraction form
   1,444.82/1,993.85 = 781.67/x
3. Step 3: Cross multiply
   1,444.82x = 1,993.85 × 781.67
4. Step 4: Simplify right side
   1,444.82x = 1,558,518.85
5. Step 5: Solve for x
   x = 1,558,518.85/1,444.82
6. Step 6: Final answer
   x = 1,078.69