Finding the Fourth Proportional to 3,131.82, 4,321.89 and 1,715.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.82 : 4,321.89 = 1,715.47 : x
2. Step 2: Convert to fraction form
   3,131.82/4,321.89 = 1,715.47/x
3. Step 3: Cross multiply
   3,131.82x = 4,321.89 × 1,715.47
4. Step 4: Simplify right side
   3,131.82x = 7,414,061.83
5. Step 5: Solve for x
   x = 7,414,061.83/3,131.82
6. Step 6: Final answer
   x = 2,367.33