Finding the Fourth Proportional to 1,280.96, 1,767.12 and 1,106

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280.96 : 1,767.12 = 1,106 : x
2. Step 2: Convert to fraction form
   1,280.96/1,767.12 = 1,106/x
3. Step 3: Cross multiply
   1,280.96x = 1,767.12 × 1,106
4. Step 4: Simplify right side
   1,280.96x = 1,954,434.72
5. Step 5: Solve for x
   x = 1,954,434.72/1,280.96
6. Step 6: Final answer
   x = 1,525.76