Finding the Fourth Proportional to 3,546.81, 5,322.69 and 1,238.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,546.81 : 5,322.69 = 1,238.31 : x
2. Step 2: Convert to fraction form
   3,546.81/5,322.69 = 1,238.31/x
3. Step 3: Cross multiply
   3,546.81x = 5,322.69 × 1,238.31
4. Step 4: Simplify right side
   3,546.81x = 6,591,140.25
5. Step 5: Solve for x
   x = 6,591,140.25/3,546.81
6. Step 6: Final answer
   x = 1,858.33