Finding the Fourth Proportional to 1,337.54, 1,845.56 and 778.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.54 : 1,845.56 = 778.10 : x
2. Step 2: Convert to fraction form
   1,337.54/1,845.56 = 778.10/x
3. Step 3: Cross multiply
   1,337.54x = 1,845.56 × 778.10
4. Step 4: Simplify right side
   1,337.54x = 1,436,030.24
5. Step 5: Solve for x
   x = 1,436,030.24/1,337.54
6. Step 6: Final answer
   x = 1,073.64