Finding the Fourth Proportional to 2,627.60, 3,941.60 and 679.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,627.60 : 3,941.60 = 679.82 : x
2. Step 2: Convert to fraction form
   2,627.60/3,941.60 = 679.82/x
3. Step 3: Cross multiply
   2,627.60x = 3,941.60 × 679.82
4. Step 4: Simplify right side
   2,627.60x = 2,679,555.40
5. Step 5: Solve for x
   x = 2,679,555.40/2,627.60
6. Step 6: Final answer
   x = 1,019.77