Finding the Fourth Proportional to 2,431.32, 3,644.46 and 1,131.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.32 : 3,644.46 = 1,131.72 : x
2. Step 2: Convert to fraction form
   2,431.32/3,644.46 = 1,131.72/x
3. Step 3: Cross multiply
   2,431.32x = 3,644.46 × 1,131.72
4. Step 4: Simplify right side
   2,431.32x = 4,124,508.27
5. Step 5: Solve for x
   x = 4,124,508.27/2,431.32
6. Step 6: Final answer
   x = 1,696.41