Finding the Fourth Proportional to 3,147.94, 4,722.07 and 1,200.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,147.94 : 4,722.07 = 1,200.30 : x
2. Step 2: Convert to fraction form
   3,147.94/4,722.07 = 1,200.30/x
3. Step 3: Cross multiply
   3,147.94x = 4,722.07 × 1,200.30
4. Step 4: Simplify right side
   3,147.94x = 5,667,900.62
5. Step 5: Solve for x
   x = 5,667,900.62/3,147.94
6. Step 6: Final answer
   x = 1,800.51