Finding the Fourth Proportional to 2,315.96, 3,196.20 and 1,321.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.96 : 3,196.20 = 1,321.54 : x
2. Step 2: Convert to fraction form
   2,315.96/3,196.20 = 1,321.54/x
3. Step 3: Cross multiply
   2,315.96x = 3,196.20 × 1,321.54
4. Step 4: Simplify right side
   2,315.96x = 4,223,906.15
5. Step 5: Solve for x
   x = 4,223,906.15/2,315.96
6. Step 6: Final answer
   x = 1,823.83