Finding the Fourth Proportional to 2,575.75, 3,555.15 and 1,528.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,575.75 : 3,555.15 = 1,528.42 : x
2. Step 2: Convert to fraction form
   2,575.75/3,555.15 = 1,528.42/x
3. Step 3: Cross multiply
   2,575.75x = 3,555.15 × 1,528.42
4. Step 4: Simplify right side
   2,575.75x = 5,433,762.36
5. Step 5: Solve for x
   x = 5,433,762.36/2,575.75
6. Step 6: Final answer
   x = 2,109.58