Finding the Fourth Proportional to 2,606.09, 3,909.18 and 874.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.09 : 3,909.18 = 874.73 : x
2. Step 2: Convert to fraction form
   2,606.09/3,909.18 = 874.73/x
3. Step 3: Cross multiply
   2,606.09x = 3,909.18 × 874.73
4. Step 4: Simplify right side
   2,606.09x = 3,419,477.02
5. Step 5: Solve for x
   x = 3,419,477.02/2,606.09
6. Step 6: Final answer
   x = 1,312.11