Finding the Fourth Proportional to 1,367.92, 1,887.54 and 778.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.92 : 1,887.54 = 778.52 : x
2. Step 2: Convert to fraction form
   1,367.92/1,887.54 = 778.52/x
3. Step 3: Cross multiply
   1,367.92x = 1,887.54 × 778.52
4. Step 4: Simplify right side
   1,367.92x = 1,469,487.64
5. Step 5: Solve for x
   x = 1,469,487.64/1,367.92
6. Step 6: Final answer
   x = 1,074.25