Finding the Fourth Proportional to 2,462.72, 3,691.62 and 901.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,462.72 : 3,691.62 = 901.40 : x
2. Step 2: Convert to fraction form
   2,462.72/3,691.62 = 901.40/x
3. Step 3: Cross multiply
   2,462.72x = 3,691.62 × 901.40
4. Step 4: Simplify right side
   2,462.72x = 3,327,626.27
5. Step 5: Solve for x
   x = 3,327,626.27/2,462.72
6. Step 6: Final answer
   x = 1,351.20