Finding the Fourth Proportional to 3,439.69, 4,746.78 and 2,113.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,439.69 : 4,746.78 = 2,113.38 : x
2. Step 2: Convert to fraction form
   3,439.69/4,746.78 = 2,113.38/x
3. Step 3: Cross multiply
   3,439.69x = 4,746.78 × 2,113.38
4. Step 4: Simplify right side
   3,439.69x = 10,031,749.92
5. Step 5: Solve for x
   x = 10,031,749.92/3,439.69
6. Step 6: Final answer
   x = 2,916.47