Finding the Fourth Proportional to 2,258.37, 3,389.31 and 1,478.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.37 : 3,389.31 = 1,478.16 : x
2. Step 2: Convert to fraction form
   2,258.37/3,389.31 = 1,478.16/x
3. Step 3: Cross multiply
   2,258.37x = 3,389.31 × 1,478.16
4. Step 4: Simplify right side
   2,258.37x = 5,009,942.47
5. Step 5: Solve for x
   x = 5,009,942.47/2,258.37
6. Step 6: Final answer
   x = 2,218.39