Finding the Fourth Proportional to 2,581.59, 3,886.53 and 1,765.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.59 : 3,886.53 = 1,765.05 : x
2. Step 2: Convert to fraction form
   2,581.59/3,886.53 = 1,765.05/x
3. Step 3: Cross multiply
   2,581.59x = 3,886.53 × 1,765.05
4. Step 4: Simplify right side
   2,581.59x = 6,859,919.78
5. Step 5: Solve for x
   x = 6,859,919.78/2,581.59
6. Step 6: Final answer
   x = 2,657.25