Finding the Fourth Proportional to 3,697.37, 5,102.35 and 2,018.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,697.37 : 5,102.35 = 2,018.78 : x
2. Step 2: Convert to fraction form
   3,697.37/5,102.35 = 2,018.78/x
3. Step 3: Cross multiply
   3,697.37x = 5,102.35 × 2,018.78
4. Step 4: Simplify right side
   3,697.37x = 10,300,491.57
5. Step 5: Solve for x
   x = 10,300,491.57/3,697.37
6. Step 6: Final answer
   x = 2,785.90