Finding the Fourth Proportional to 3,343.89, 5,016.15 and 878.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,343.89 : 5,016.15 = 878.71 : x
2. Step 2: Convert to fraction form
   3,343.89/5,016.15 = 878.71/x
3. Step 3: Cross multiply
   3,343.89x = 5,016.15 × 878.71
4. Step 4: Simplify right side
   3,343.89x = 4,407,742.00
5. Step 5: Solve for x
   x = 4,407,742.00/3,343.89
6. Step 6: Final answer
   x = 1,318.15