Finding the Fourth Proportional to 3,404.53, 5,106.82 and 939.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.53 : 5,106.82 = 939.29 : x
2. Step 2: Convert to fraction form
   3,404.53/5,106.82 = 939.29/x
3. Step 3: Cross multiply
   3,404.53x = 5,106.82 × 939.29
4. Step 4: Simplify right side
   3,404.53x = 4,796,798.90
5. Step 5: Solve for x
   x = 4,796,798.90/3,404.53
6. Step 6: Final answer
   x = 1,408.95