Finding the Fourth Proportional to 3,786.73, 5,680.57 and 1,253.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,786.73 : 5,680.57 = 1,253.93 : x
2. Step 2: Convert to fraction form
   3,786.73/5,680.57 = 1,253.93/x
3. Step 3: Cross multiply
   3,786.73x = 5,680.57 × 1,253.93
4. Step 4: Simplify right side
   3,786.73x = 7,123,040.27
5. Step 5: Solve for x
   x = 7,123,040.27/3,786.73
6. Step 6: Final answer
   x = 1,881.05