Finding the Fourth Proportional to 1,772.78, 2,658.72 and 676.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,772.78 : 2,658.72 = 676.82 : x
2. Step 2: Convert to fraction form
   1,772.78/2,658.72 = 676.82/x
3. Step 3: Cross multiply
   1,772.78x = 2,658.72 × 676.82
4. Step 4: Simplify right side
   1,772.78x = 1,799,474.87
5. Step 5: Solve for x
   x = 1,799,474.87/1,772.78
6. Step 6: Final answer
   x = 1,015.06