Finding the Fourth Proportional to 2,722.72, 4,090.56 and 2,528.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.72 : 4,090.56 = 2,528.32 : x
2. Step 2: Convert to fraction form
   2,722.72/4,090.56 = 2,528.32/x
3. Step 3: Cross multiply
   2,722.72x = 4,090.56 × 2,528.32
4. Step 4: Simplify right side
   2,722.72x = 10,342,244.66
5. Step 5: Solve for x
   x = 10,342,244.66/2,722.72
6. Step 6: Final answer
   x = 3,798.50