Finding the Fourth Proportional to 2,555.12, 3,528.69 and 2,200.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.12 : 3,528.69 = 2,200.34 : x
2. Step 2: Convert to fraction form
   2,555.12/3,528.69 = 2,200.34/x
3. Step 3: Cross multiply
   2,555.12x = 3,528.69 × 2,200.34
4. Step 4: Simplify right side
   2,555.12x = 7,764,317.75
5. Step 5: Solve for x
   x = 7,764,317.75/2,555.12
6. Step 6: Final answer
   x = 3,038.73