Finding the Fourth Proportional to 3,131.34, 4,321.34 and 1,734.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.34 : 4,321.34 = 1,734.09 : x
2. Step 2: Convert to fraction form
   3,131.34/4,321.34 = 1,734.09/x
3. Step 3: Cross multiply
   3,131.34x = 4,321.34 × 1,734.09
4. Step 4: Simplify right side
   3,131.34x = 7,493,592.48
5. Step 5: Solve for x
   x = 7,493,592.48/3,131.34
6. Step 6: Final answer
   x = 2,393.09