Finding the Fourth Proportional to 2,018.34, 2,785.59 and 1,686.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,018.34 : 2,785.59 = 1,686.24 : x
2. Step 2: Convert to fraction form
   2,018.34/2,785.59 = 1,686.24/x
3. Step 3: Cross multiply
   2,018.34x = 2,785.59 × 1,686.24
4. Step 4: Simplify right side
   2,018.34x = 4,697,173.28
5. Step 5: Solve for x
   x = 4,697,173.28/2,018.34
6. Step 6: Final answer
   x = 2,327.25