Finding the Fourth Proportional to 2,131.57, 3,197.89 and 1,694.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.57 : 3,197.89 = 1,694.47 : x
2. Step 2: Convert to fraction form
   2,131.57/3,197.89 = 1,694.47/x
3. Step 3: Cross multiply
   2,131.57x = 3,197.89 × 1,694.47
4. Step 4: Simplify right side
   2,131.57x = 5,418,728.67
5. Step 5: Solve for x
   x = 5,418,728.67/2,131.57
6. Step 6: Final answer
   x = 2,542.13