Finding the Fourth Proportional to 3,871.37, 5,807.46 and 1,274.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.37 : 5,807.46 = 1,274.51 : x
2. Step 2: Convert to fraction form
   3,871.37/5,807.46 = 1,274.51/x
3. Step 3: Cross multiply
   3,871.37x = 5,807.46 × 1,274.51
4. Step 4: Simplify right side
   3,871.37x = 7,401,665.84
5. Step 5: Solve for x
   x = 7,401,665.84/3,871.37
6. Step 6: Final answer
   x = 1,911.90