Finding the Fourth Proportional to 2,627.22, 3,941.60 and 778.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.22 : 3,941.60 = 778.38 : x
2. Step 2: Convert to fraction form
   2,627.22/3,941.60 = 778.38/x
3. Step 3: Cross multiply
   2,627.22x = 3,941.60 × 778.38
4. Step 4: Simplify right side
   2,627.22x = 3,068,058.72
5. Step 5: Solve for x
   x = 3,068,058.72/2,627.22
6. Step 6: Final answer
   x = 1,167.80