Finding the Fourth Proportional to 3,611.88, 4,984.34 and 2,018.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,611.88 : 4,984.34 = 2,018.57 : x
2. Step 2: Convert to fraction form
   3,611.88/4,984.34 = 2,018.57/x
3. Step 3: Cross multiply
   3,611.88x = 4,984.34 × 2,018.57
4. Step 4: Simplify right side
   3,611.88x = 10,061,204.18
5. Step 5: Solve for x
   x = 10,061,204.18/3,611.88
6. Step 6: Final answer
   x = 2,785.59