Finding the Fourth Proportional to 3,404.59, 5,106.92 and 939.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.59 : 5,106.92 = 939.54 : x
2. Step 2: Convert to fraction form
   3,404.59/5,106.92 = 939.54/x
3. Step 3: Cross multiply
   3,404.59x = 5,106.92 × 939.54
4. Step 4: Simplify right side
   3,404.59x = 4,798,155.71
5. Step 5: Solve for x
   x = 4,798,155.71/3,404.59
6. Step 6: Final answer
   x = 1,409.32