Finding the Fourth Proportional to 2,577.56, 3,555.78 and 1,528.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.56 : 3,555.78 = 1,528.88 : x
2. Step 2: Convert to fraction form
   2,577.56/3,555.78 = 1,528.88/x
3. Step 3: Cross multiply
   2,577.56x = 3,555.78 × 1,528.88
4. Step 4: Simplify right side
   2,577.56x = 5,436,360.93
5. Step 5: Solve for x
   x = 5,436,360.93/2,577.56
6. Step 6: Final answer
   x = 2,109.11