Finding the Fourth Proportional to 2,680.75, 4,021.27 and 1,037.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.75 : 4,021.27 = 1,037.15 : x
2. Step 2: Convert to fraction form
   2,680.75/4,021.27 = 1,037.15/x
3. Step 3: Cross multiply
   2,680.75x = 4,021.27 × 1,037.15
4. Step 4: Simplify right side
   2,680.75x = 4,170,678.10
5. Step 5: Solve for x
   x = 4,170,678.10/2,680.75
6. Step 6: Final answer
   x = 1,555.79