Finding the Fourth Proportional to 3,630.41, 5,012.79 and 2,789.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.41 : 5,012.79 = 2,789.78 : x
2. Step 2: Convert to fraction form
   3,630.41/5,012.79 = 2,789.78/x
3. Step 3: Cross multiply
   3,630.41x = 5,012.79 × 2,789.78
4. Step 4: Simplify right side
   3,630.41x = 13,984,581.29
5. Step 5: Solve for x
   x = 13,984,581.29/3,630.41
6. Step 6: Final answer
   x = 3,852.07