Finding the Fourth Proportional to 3,404.34, 5,105.88 and 938.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,404.34 : 5,105.88 = 938.63 : x
2. Step 2: Convert to fraction form
   3,404.34/5,105.88 = 938.63/x
3. Step 3: Cross multiply
   3,404.34x = 5,105.88 × 938.63
4. Step 4: Simplify right side
   3,404.34x = 4,792,506.62
5. Step 5: Solve for x
   x = 4,792,506.62/3,404.34
6. Step 6: Final answer
   x = 1,407.76