Finding the Fourth Proportional to 3,401.56, 5,102.32 and 936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.56 : 5,102.32 = 936.72 : x
2. Step 2: Convert to fraction form
   3,401.56/5,102.32 = 936.72/x
3. Step 3: Cross multiply
   3,401.56x = 5,102.32 × 936.72
4. Step 4: Simplify right side
   3,401.56x = 4,779,445.19
5. Step 5: Solve for x
   x = 4,779,445.19/3,401.56
6. Step 6: Final answer
   x = 1,405.07