Finding the Fourth Proportional to 3,131.59, 4,321.73 and 1,734.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.59 : 4,321.73 = 1,734.34 : x
2. Step 2: Convert to fraction form
   3,131.59/4,321.73 = 1,734.34/x
3. Step 3: Cross multiply
   3,131.59x = 4,321.73 × 1,734.34
4. Step 4: Simplify right side
   3,131.59x = 7,495,349.21
5. Step 5: Solve for x
   x = 7,495,349.21/3,131.59
6. Step 6: Final answer
   x = 2,393.46