Finding the Fourth Proportional to 1,436.92, 1,983.16 and 877.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.92 : 1,983.16 = 877.71 : x
2. Step 2: Convert to fraction form
   1,436.92/1,983.16 = 877.71/x
3. Step 3: Cross multiply
   1,436.92x = 1,983.16 × 877.71
4. Step 4: Simplify right side
   1,436.92x = 1,740,642.66
5. Step 5: Solve for x
   x = 1,740,642.66/1,436.92
6. Step 6: Final answer
   x = 1,211.37