Finding the Fourth Proportional to 1,337.92, 1,845.89 and 778.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.92 : 1,845.89 = 778.11 : x
2. Step 2: Convert to fraction form
   1,337.92/1,845.89 = 778.11/x
3. Step 3: Cross multiply
   1,337.92x = 1,845.89 × 778.11
4. Step 4: Simplify right side
   1,337.92x = 1,436,297.57
5. Step 5: Solve for x
   x = 1,436,297.57/1,337.92
6. Step 6: Final answer
   x = 1,073.53