Finding the Fourth Proportional to 3,611.98, 4,984.40 and 2,018.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,611.98 : 4,984.40 = 2,018.61 : x
2. Step 2: Convert to fraction form
   3,611.98/4,984.40 = 2,018.61/x
3. Step 3: Cross multiply
   3,611.98x = 4,984.40 × 2,018.61
4. Step 4: Simplify right side
   3,611.98x = 10,061,559.68
5. Step 5: Solve for x
   x = 10,061,559.68/3,611.98
6. Step 6: Final answer
   x = 2,785.61