Finding the Fourth Proportional to 2,627.57, 3,941.98 and 778.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.57 : 3,941.98 = 778.70 : x
2. Step 2: Convert to fraction form
   2,627.57/3,941.98 = 778.70/x
3. Step 3: Cross multiply
   2,627.57x = 3,941.98 × 778.70
4. Step 4: Simplify right side
   2,627.57x = 3,069,627.73
5. Step 5: Solve for x
   x = 3,069,627.73/2,627.57
6. Step 6: Final answer
   x = 1,168.24