Finding the Fourth Proportional to 2,317.38, 3,196.29 and 1,688.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.38 : 3,196.29 = 1,688.10 : x
2. Step 2: Convert to fraction form
   2,317.38/3,196.29 = 1,688.10/x
3. Step 3: Cross multiply
   2,317.38x = 3,196.29 × 1,688.10
4. Step 4: Simplify right side
   2,317.38x = 5,395,657.15
5. Step 5: Solve for x
   x = 5,395,657.15/2,317.38
6. Step 6: Final answer
   x = 2,328.34