Finding the Fourth Proportional to 1,483.18, 2,224.78 and 871.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,483.18 : 2,224.78 = 871.16 : x
2. Step 2: Convert to fraction form
   1,483.18/2,224.78 = 871.16/x
3. Step 3: Cross multiply
   1,483.18x = 2,224.78 × 871.16
4. Step 4: Simplify right side
   1,483.18x = 1,938,139.34
5. Step 5: Solve for x
   x = 1,938,139.34/1,483.18
6. Step 6: Final answer
   x = 1,306.75