Finding the Fourth Proportional to 2,318.73, 3,471.46 and 1,438.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,318.73 : 3,471.46 = 1,438.59 : x
2. Step 2: Convert to fraction form
   2,318.73/3,471.46 = 1,438.59/x
3. Step 3: Cross multiply
   2,318.73x = 3,471.46 × 1,438.59
4. Step 4: Simplify right side
   2,318.73x = 4,994,017.06
5. Step 5: Solve for x
   x = 4,994,017.06/2,318.73
6. Step 6: Final answer
   x = 2,153.78