Finding the Fourth Proportional to 1,436.84, 2,155.24 and 949.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.84 : 2,155.24 = 949.78 : x
2. Step 2: Convert to fraction form
   1,436.84/2,155.24 = 949.78/x
3. Step 3: Cross multiply
   1,436.84x = 2,155.24 × 949.78
4. Step 4: Simplify right side
   1,436.84x = 2,047,003.85
5. Step 5: Solve for x
   x = 2,047,003.85/1,436.84
6. Step 6: Final answer
   x = 1,424.66