Finding the Fourth Proportional to 1,961.05, 2,706.33 and 1,121.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,961.05 : 2,706.33 = 1,121.89 : x
2. Step 2: Convert to fraction form
   1,961.05/2,706.33 = 1,121.89/x
3. Step 3: Cross multiply
   1,961.05x = 2,706.33 × 1,121.89
4. Step 4: Simplify right side
   1,961.05x = 3,036,204.56
5. Step 5: Solve for x
   x = 3,036,204.56/1,961.05
6. Step 6: Final answer
   x = 1,548.25