Finding the Fourth Proportional to 1,960.69, 2,706.32 and 1,121.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.69 : 2,706.32 = 1,121.87 : x
2. Step 2: Convert to fraction form
   1,960.69/2,706.32 = 1,121.87/x
3. Step 3: Cross multiply
   1,960.69x = 2,706.32 × 1,121.87
4. Step 4: Simplify right side
   1,960.69x = 3,036,139.22
5. Step 5: Solve for x
   x = 3,036,139.22/1,960.69
6. Step 6: Final answer
   x = 1,548.51