Finding the Fourth Proportional to 2,131.54, 3,193.81 and 1,308.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.54 : 3,193.81 = 1,308.07 : x
2. Step 2: Convert to fraction form
   2,131.54/3,193.81 = 1,308.07/x
3. Step 3: Cross multiply
   2,131.54x = 3,193.81 × 1,308.07
4. Step 4: Simplify right side
   2,131.54x = 4,177,727.05
5. Step 5: Solve for x
   x = 4,177,727.05/2,131.54
6. Step 6: Final answer
   x = 1,959.96