Finding the Fourth Proportional to 3,401.71, 5,102.69 and 936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.71 : 5,102.69 = 936.72 : x
2. Step 2: Convert to fraction form
   3,401.71/5,102.69 = 936.72/x
3. Step 3: Cross multiply
   3,401.71x = 5,102.69 × 936.72
4. Step 4: Simplify right side
   3,401.71x = 4,779,791.78
5. Step 5: Solve for x
   x = 4,779,791.78/3,401.71
6. Step 6: Final answer
   x = 1,405.11