Finding the Fourth Proportional to 5,179.69, 7,769.55 and 1,669.95

Step by Step Solution

1. Step 1: Write the proportion equation
   5,179.69 : 7,769.55 = 1,669.95 : x
2. Step 2: Convert to fraction form
   5,179.69/7,769.55 = 1,669.95/x
3. Step 3: Cross multiply
   5,179.69x = 7,769.55 × 1,669.95
4. Step 4: Simplify right side
   5,179.69x = 12,974,792.02
5. Step 5: Solve for x
   x = 12,974,792.02/5,179.69
6. Step 6: Final answer
   x = 2,504.94