Finding the Fourth Proportional to 1,828.58, 2,523.42 and 989.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,828.58 : 2,523.42 = 989.27 : x
2. Step 2: Convert to fraction form
   1,828.58/2,523.42 = 989.27/x
3. Step 3: Cross multiply
   1,828.58x = 2,523.42 × 989.27
4. Step 4: Simplify right side
   1,828.58x = 2,496,333.43
5. Step 5: Solve for x
   x = 2,496,333.43/1,828.58
6. Step 6: Final answer
   x = 1,365.18