Finding the Fourth Proportional to 2,538.60, 3,809.46 and 1,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.60 : 3,809.46 = 1,443.72 : x
2. Step 2: Convert to fraction form
   2,538.60/3,809.46 = 1,443.72/x
3. Step 3: Cross multiply
   2,538.60x = 3,809.46 × 1,443.72
4. Step 4: Simplify right side
   2,538.60x = 5,499,793.59
5. Step 5: Solve for x
   x = 5,499,793.59/2,538.60
6. Step 6: Final answer
   x = 2,166.47