Finding the Fourth Proportional to 1,354.55, 1,868.13 and 882.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.55 : 1,868.13 = 882.21 : x
2. Step 2: Convert to fraction form
   1,354.55/1,868.13 = 882.21/x
3. Step 3: Cross multiply
   1,354.55x = 1,868.13 × 882.21
4. Step 4: Simplify right side
   1,354.55x = 1,648,082.97
5. Step 5: Solve for x
   x = 1,648,082.97/1,354.55
6. Step 6: Final answer
   x = 1,216.71