Finding the Fourth Proportional to 2,591.82, 3,559.34 and 2,218.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.82 : 3,559.34 = 2,218.80 : x
2. Step 2: Convert to fraction form
   2,591.82/3,559.34 = 2,218.80/x
3. Step 3: Cross multiply
   2,591.82x = 3,559.34 × 2,218.80
4. Step 4: Simplify right side
   2,591.82x = 7,897,452.50
5. Step 5: Solve for x
   x = 7,897,452.50/2,591.82
6. Step 6: Final answer
   x = 3,047.07