Finding the Fourth Proportional to 2,852.68, 3,932.88 and 2,561.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,852.68 : 3,932.88 = 2,561.08 : x
2. Step 2: Convert to fraction form
   2,852.68/3,932.88 = 2,561.08/x
3. Step 3: Cross multiply
   2,852.68x = 3,932.88 × 2,561.08
4. Step 4: Simplify right side
   2,852.68x = 10,072,420.31
5. Step 5: Solve for x
   x = 10,072,420.31/2,852.68
6. Step 6: Final answer
   x = 3,530.86