Finding the Fourth Proportional to 3,674.50, 5,070.85 and 2,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,674.50 : 5,070.85 = 2,018.50 : x
2. Step 2: Convert to fraction form
   3,674.50/5,070.85 = 2,018.50/x
3. Step 3: Cross multiply
   3,674.50x = 5,070.85 × 2,018.50
4. Step 4: Simplify right side
   3,674.50x = 10,235,510.73
5. Step 5: Solve for x
   x = 10,235,510.73/3,674.50
6. Step 6: Final answer
   x = 2,785.55