Finding the Fourth Proportional to 1,960.76, 2,705.48 and 1,121.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.76 : 2,705.48 = 1,121.73 : x
2. Step 2: Convert to fraction form
   1,960.76/2,705.48 = 1,121.73/x
3. Step 3: Cross multiply
   1,960.76x = 2,705.48 × 1,121.73
4. Step 4: Simplify right side
   1,960.76x = 3,034,812.47
5. Step 5: Solve for x
   x = 3,034,812.47/1,960.76
6. Step 6: Final answer
   x = 1,547.77