Finding the Fourth Proportional to 3,561.31, 4,907.59 and 2,722.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.31 : 4,907.59 = 2,722.96 : x
2. Step 2: Convert to fraction form
   3,561.31/4,907.59 = 2,722.96/x
3. Step 3: Cross multiply
   3,561.31x = 4,907.59 × 2,722.96
4. Step 4: Simplify right side
   3,561.31x = 13,363,171.27
5. Step 5: Solve for x
   x = 13,363,171.27/3,561.31
6. Step 6: Final answer
   x = 3,752.32