Finding the Fourth Proportional to 1,828.62, 2,523.50 and 989.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,828.62 : 2,523.50 = 989.34 : x
2. Step 2: Convert to fraction form
   1,828.62/2,523.50 = 989.34/x
3. Step 3: Cross multiply
   1,828.62x = 2,523.50 × 989.34
4. Step 4: Simplify right side
   1,828.62x = 2,496,594.54
5. Step 5: Solve for x
   x = 2,496,594.54/1,828.62
6. Step 6: Final answer
   x = 1,365.29