Finding the Fourth Proportional to 2,115.16, 3,172.38 and 882.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,115.16 : 3,172.38 = 882.76 : x
2. Step 2: Convert to fraction form
   2,115.16/3,172.38 = 882.76/x
3. Step 3: Cross multiply
   2,115.16x = 3,172.38 × 882.76
4. Step 4: Simplify right side
   2,115.16x = 2,800,450.17
5. Step 5: Solve for x
   x = 2,800,450.17/2,115.16
6. Step 6: Final answer
   x = 1,323.99