Finding the Fourth Proportional to 2,555.55, 3,525.22 and 1,609.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.55 : 3,525.22 = 1,609.72 : x
2. Step 2: Convert to fraction form
   2,555.55/3,525.22 = 1,609.72/x
3. Step 3: Cross multiply
   2,555.55x = 3,525.22 × 1,609.72
4. Step 4: Simplify right side
   2,555.55x = 5,674,591.46
5. Step 5: Solve for x
   x = 5,674,591.46/2,555.55
6. Step 6: Final answer
   x = 2,220.50