Finding the Fourth Proportional to 1,084.39, 1,624.46 and 1,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.39 : 1,624.46 = 1,028.50 : x
2. Step 2: Convert to fraction form
   1,084.39/1,624.46 = 1,028.50/x
3. Step 3: Cross multiply
   1,084.39x = 1,624.46 × 1,028.50
4. Step 4: Simplify right side
   1,084.39x = 1,670,747.91
5. Step 5: Solve for x
   x = 1,670,747.91/1,084.39
6. Step 6: Final answer
   x = 1,540.73