Finding the Fourth Proportional to 1,969.69, 2,718.49 and 1,173.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.69 : 2,718.49 = 1,173.06 : x
2. Step 2: Convert to fraction form
   1,969.69/2,718.49 = 1,173.06/x
3. Step 3: Cross multiply
   1,969.69x = 2,718.49 × 1,173.06
4. Step 4: Simplify right side
   1,969.69x = 3,188,951.88
5. Step 5: Solve for x
   x = 3,188,951.88/1,969.69
6. Step 6: Final answer
   x = 1,619.01