Finding the Fourth Proportional to 2,628.89, 3,628.50 and 1,580.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.89 : 3,628.50 = 1,580.75 : x
2. Step 2: Convert to fraction form
   2,628.89/3,628.50 = 1,580.75/x
3. Step 3: Cross multiply
   2,628.89x = 3,628.50 × 1,580.75
4. Step 4: Simplify right side
   2,628.89x = 5,735,751.38
5. Step 5: Solve for x
   x = 5,735,751.38/2,628.89
6. Step 6: Final answer
   x = 2,181.81