Finding the Fourth Proportional to 3,851.43, 5,777.69 and 1,253.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.43 : 5,777.69 = 1,253.76 : x
2. Step 2: Convert to fraction form
   3,851.43/5,777.69 = 1,253.76/x
3. Step 3: Cross multiply
   3,851.43x = 5,777.69 × 1,253.76
4. Step 4: Simplify right side
   3,851.43x = 7,243,836.61
5. Step 5: Solve for x
   x = 7,243,836.61/3,851.43
6. Step 6: Final answer
   x = 1,880.82