Finding the Fourth Proportional to 1,345.26, 2,018.25 and 768.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.26 : 2,018.25 = 768.54 : x
2. Step 2: Convert to fraction form
   1,345.26/2,018.25 = 768.54/x
3. Step 3: Cross multiply
   1,345.26x = 2,018.25 × 768.54
4. Step 4: Simplify right side
   1,345.26x = 1,551,105.86
5. Step 5: Solve for x
   x = 1,551,105.86/1,345.26
6. Step 6: Final answer
   x = 1,153.02