Finding the Fourth Proportional to 3,722.12, 5,581.71 and 1,871.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,722.12 : 5,581.71 = 1,871.94 : x
2. Step 2: Convert to fraction form
   3,722.12/5,581.71 = 1,871.94/x
3. Step 3: Cross multiply
   3,722.12x = 5,581.71 × 1,871.94
4. Step 4: Simplify right side
   3,722.12x = 10,448,647.15
5. Step 5: Solve for x
   x = 10,448,647.15/3,722.12
6. Step 6: Final answer
   x = 2,807.18