Finding the Fourth Proportional to 1,645.56, 2,456.55 and 1,525.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645.56 : 2,456.55 = 1,525.56 : x
2. Step 2: Convert to fraction form
   1,645.56/2,456.55 = 1,525.56/x
3. Step 3: Cross multiply
   1,645.56x = 2,456.55 × 1,525.56
4. Step 4: Simplify right side
   1,645.56x = 3,747,614.42
5. Step 5: Solve for x
   x = 3,747,614.42/1,645.56
6. Step 6: Final answer
   x = 2,277.41