Finding the Fourth Proportional to 2,609.61, 3,601.89 and 1,771.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.61 : 3,601.89 = 1,771.71 : x
2. Step 2: Convert to fraction form
   2,609.61/3,601.89 = 1,771.71/x
3. Step 3: Cross multiply
   2,609.61x = 3,601.89 × 1,771.71
4. Step 4: Simplify right side
   2,609.61x = 6,381,504.53
5. Step 5: Solve for x
   x = 6,381,504.53/2,609.61
6. Step 6: Final answer
   x = 2,445.39