Finding the Fourth Proportional to 2,680.86, 3,700.62 and 2,606.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.86 : 3,700.62 = 2,606.88 : x
2. Step 2: Convert to fraction form
   2,680.86/3,700.62 = 2,606.88/x
3. Step 3: Cross multiply
   2,680.86x = 3,700.62 × 2,606.88
4. Step 4: Simplify right side
   2,680.86x = 9,647,072.27
5. Step 5: Solve for x
   x = 9,647,072.27/2,680.86
6. Step 6: Final answer
   x = 3,598.50