Finding the Fourth Proportional to 1,961.31, 2,706.61 and 1,065.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,961.31 : 2,706.61 = 1,065.05 : x
2. Step 2: Convert to fraction form
   1,961.31/2,706.61 = 1,065.05/x
3. Step 3: Cross multiply
   1,961.31x = 2,706.61 × 1,065.05
4. Step 4: Simplify right side
   1,961.31x = 2,882,665.55
5. Step 5: Solve for x
   x = 2,882,665.55/1,961.31
6. Step 6: Final answer
   x = 1,469.77