Finding the Fourth Proportional to 2,951.82, 4,402.77 and 2,780.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,951.82 : 4,402.77 = 2,780.49 : x
2. Step 2: Convert to fraction form
   2,951.82/4,402.77 = 2,780.49/x
3. Step 3: Cross multiply
   2,951.82x = 4,402.77 × 2,780.49
4. Step 4: Simplify right side
   2,951.82x = 12,241,857.96
5. Step 5: Solve for x
   x = 12,241,857.96/2,951.82
6. Step 6: Final answer
   x = 4,147.22