Finding the Fourth Proportional to 2,329.21, 3,212.69 and 1,489.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,329.21 : 3,212.69 = 1,489.53 : x
2. Step 2: Convert to fraction form
   2,329.21/3,212.69 = 1,489.53/x
3. Step 3: Cross multiply
   2,329.21x = 3,212.69 × 1,489.53
4. Step 4: Simplify right side
   2,329.21x = 4,785,401.86
5. Step 5: Solve for x
   x = 4,785,401.86/2,329.21
6. Step 6: Final answer
   x = 2,054.52