Finding the Fourth Proportional to 2,555.79, 3,527.09 and 1,561.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.79 : 3,527.09 = 1,561.52 : x
2. Step 2: Convert to fraction form
   2,555.79/3,527.09 = 1,561.52/x
3. Step 3: Cross multiply
   2,555.79x = 3,527.09 × 1,561.52
4. Step 4: Simplify right side
   2,555.79x = 5,507,621.58
5. Step 5: Solve for x
   x = 5,507,621.58/2,555.79
6. Step 6: Final answer
   x = 2,154.96