Finding the Fourth Proportional to 1,368.03, 1,887.82 and 778.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.03 : 1,887.82 = 778.62 : x
2. Step 2: Convert to fraction form
   1,368.03/1,887.82 = 778.62/x
3. Step 3: Cross multiply
   1,368.03x = 1,887.82 × 778.62
4. Step 4: Simplify right side
   1,368.03x = 1,469,894.41
5. Step 5: Solve for x
   x = 1,469,894.41/1,368.03
6. Step 6: Final answer
   x = 1,074.46