Finding the Fourth Proportional to 2,608.55, 3,909.16 and 1,874.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.55 : 3,909.16 = 1,874.69 : x
2. Step 2: Convert to fraction form
   2,608.55/3,909.16 = 1,874.69/x
3. Step 3: Cross multiply
   2,608.55x = 3,909.16 × 1,874.69
4. Step 4: Simplify right side
   2,608.55x = 7,328,463.16
5. Step 5: Solve for x
   x = 7,328,463.16/2,608.55
6. Step 6: Final answer
   x = 2,809.40