Finding the Fourth Proportional to 2,317.96, 3,201.57 and 1,687.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.96 : 3,201.57 = 1,687.47 : x
2. Step 2: Convert to fraction form
   2,317.96/3,201.57 = 1,687.47/x
3. Step 3: Cross multiply
   2,317.96x = 3,201.57 × 1,687.47
4. Step 4: Simplify right side
   2,317.96x = 5,402,544.89
5. Step 5: Solve for x
   x = 5,402,544.89/2,317.96
6. Step 6: Final answer
   x = 2,330.74