Finding the Fourth Proportional to 2,353.82, 3,530.31 and 872.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.82 : 3,530.31 = 872.87 : x
2. Step 2: Convert to fraction form
   2,353.82/3,530.31 = 872.87/x
3. Step 3: Cross multiply
   2,353.82x = 3,530.31 × 872.87
4. Step 4: Simplify right side
   2,353.82x = 3,081,501.69
5. Step 5: Solve for x
   x = 3,081,501.69/2,353.82
6. Step 6: Final answer
   x = 1,309.15