Finding the Fourth Proportional to 1,337.52, 1,845.78 and 778.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.52 : 1,845.78 = 778.32 : x
2. Step 2: Convert to fraction form
   1,337.52/1,845.78 = 778.32/x
3. Step 3: Cross multiply
   1,337.52x = 1,845.78 × 778.32
4. Step 4: Simplify right side
   1,337.52x = 1,436,607.49
5. Step 5: Solve for x
   x = 1,436,607.49/1,337.52
6. Step 6: Final answer
   x = 1,074.08