Finding the Fourth Proportional to 2,131.41, 3,197.80 and 1,253.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.41 : 3,197.80 = 1,253.73 : x
2. Step 2: Convert to fraction form
   2,131.41/3,197.80 = 1,253.73/x
3. Step 3: Cross multiply
   2,131.41x = 3,197.80 × 1,253.73
4. Step 4: Simplify right side
   2,131.41x = 4,009,176.89
5. Step 5: Solve for x
   x = 4,009,176.89/2,131.41
6. Step 6: Final answer
   x = 1,880.99