Finding the Fourth Proportional to 2,958.38, 4,436.02 and 878.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.38 : 4,436.02 = 878.10 : x
2. Step 2: Convert to fraction form
   2,958.38/4,436.02 = 878.10/x
3. Step 3: Cross multiply
   2,958.38x = 4,436.02 × 878.10
4. Step 4: Simplify right side
   2,958.38x = 3,895,269.16
5. Step 5: Solve for x
   x = 3,895,269.16/2,958.38
6. Step 6: Final answer
   x = 1,316.69