Finding the Fourth Proportional to 1,436.77, 1,982.95 and 877.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.77 : 1,982.95 = 877.56 : x
2. Step 2: Convert to fraction form
   1,436.77/1,982.95 = 877.56/x
3. Step 3: Cross multiply
   1,436.77x = 1,982.95 × 877.56
4. Step 4: Simplify right side
   1,436.77x = 1,740,159.80
5. Step 5: Solve for x
   x = 1,740,159.80/1,436.77
6. Step 6: Final answer
   x = 1,211.17