Finding the Fourth Proportional to 1,367.73, 1,887.53 and 778.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.73 : 1,887.53 = 778.46 : x
2. Step 2: Convert to fraction form
   1,367.73/1,887.53 = 778.46/x
3. Step 3: Cross multiply
   1,367.73x = 1,887.53 × 778.46
4. Step 4: Simplify right side
   1,367.73x = 1,469,353.27
5. Step 5: Solve for x
   x = 1,469,353.27/1,367.73
6. Step 6: Final answer
   x = 1,074.30