Finding the Fourth Proportional to 3,147.93, 4,722.57 and 1,200.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,147.93 : 4,722.57 = 1,200.69 : x
2. Step 2: Convert to fraction form
   3,147.93/4,722.57 = 1,200.69/x
3. Step 3: Cross multiply
   3,147.93x = 4,722.57 × 1,200.69
4. Step 4: Simplify right side
   3,147.93x = 5,670,342.57
5. Step 5: Solve for x
   x = 5,670,342.57/3,147.93
6. Step 6: Final answer
   x = 1,801.29