Finding the Fourth Proportional to 1,367.54, 1,887.42 and 778.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.54 : 1,887.42 = 778.04 : x
2. Step 2: Convert to fraction form
   1,367.54/1,887.42 = 778.04/x
3. Step 3: Cross multiply
   1,367.54x = 1,887.42 × 778.04
4. Step 4: Simplify right side
   1,367.54x = 1,468,488.26
5. Step 5: Solve for x
   x = 1,468,488.26/1,367.54
6. Step 6: Final answer
   x = 1,073.82