Finding the Fourth Proportional to 2,577.89, 3,559.48 and 2,017.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.89 : 3,559.48 = 2,017.37 : x
2. Step 2: Convert to fraction form
   2,577.89/3,559.48 = 2,017.37/x
3. Step 3: Cross multiply
   2,577.89x = 3,559.48 × 2,017.37
4. Step 4: Simplify right side
   2,577.89x = 7,180,792.02
5. Step 5: Solve for x
   x = 7,180,792.02/2,577.89
6. Step 6: Final answer
   x = 2,785.53