Finding the Fourth Proportional to 2,114.55, 3,172.74 and 882.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.55 : 3,172.74 = 882.21 : x
2. Step 2: Convert to fraction form
   2,114.55/3,172.74 = 882.21/x
3. Step 3: Cross multiply
   2,114.55x = 3,172.74 × 882.21
4. Step 4: Simplify right side
   2,114.55x = 2,799,007.09
5. Step 5: Solve for x
   x = 2,799,007.09/2,114.55
6. Step 6: Final answer
   x = 1,323.69