Finding the Fourth Proportional to 1,436.82, 1,982.16 and 877.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.82 : 1,982.16 = 877.20 : x
2. Step 2: Convert to fraction form
   1,436.82/1,982.16 = 877.20/x
3. Step 3: Cross multiply
   1,436.82x = 1,982.16 × 877.20
4. Step 4: Simplify right side
   1,436.82x = 1,738,750.75
5. Step 5: Solve for x
   x = 1,738,750.75/1,436.82
6. Step 6: Final answer
   x = 1,210.14