Finding the Fourth Proportional to 1,436.37, 1,981.56 and 876.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.37 : 1,981.56 = 876.75 : x
2. Step 2: Convert to fraction form
   1,436.37/1,981.56 = 876.75/x
3. Step 3: Cross multiply
   1,436.37x = 1,981.56 × 876.75
4. Step 4: Simplify right side
   1,436.37x = 1,737,332.73
5. Step 5: Solve for x
   x = 1,737,332.73/1,436.37
6. Step 6: Final answer
   x = 1,209.53