Finding the Fourth Proportional to 3,510.57, 4,843.71 and 2,018.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,510.57 : 4,843.71 = 2,018.91 : x
2. Step 2: Convert to fraction form
   3,510.57/4,843.71 = 2,018.91/x
3. Step 3: Cross multiply
   3,510.57x = 4,843.71 × 2,018.91
4. Step 4: Simplify right side
   3,510.57x = 9,779,014.56
5. Step 5: Solve for x
   x = 9,779,014.56/3,510.57
6. Step 6: Final answer
   x = 2,785.59