Finding the Fourth Proportional to 2,321.57, 3,474.83 and 1,489.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.57 : 3,474.83 = 1,489.15 : x
2. Step 2: Convert to fraction form
   2,321.57/3,474.83 = 1,489.15/x
3. Step 3: Cross multiply
   2,321.57x = 3,474.83 × 1,489.15
4. Step 4: Simplify right side
   2,321.57x = 5,174,525.72
5. Step 5: Solve for x
   x = 5,174,525.72/2,321.57
6. Step 6: Final answer
   x = 2,228.89