Finding the Fourth Proportional to 3,431.34, 4,733.46 and 2,312.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431.34 : 4,733.46 = 2,312.31 : x
2. Step 2: Convert to fraction form
   3,431.34/4,733.46 = 2,312.31/x
3. Step 3: Cross multiply
   3,431.34x = 4,733.46 × 2,312.31
4. Step 4: Simplify right side
   3,431.34x = 10,945,226.89
5. Step 5: Solve for x
   x = 10,945,226.89/3,431.34
6. Step 6: Final answer
   x = 3,189.78