Finding the Fourth Proportional to 1,382.06, 1,906.44 and 1,066.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.06 : 1,906.44 = 1,066.88 : x
2. Step 2: Convert to fraction form
   1,382.06/1,906.44 = 1,066.88/x
3. Step 3: Cross multiply
   1,382.06x = 1,906.44 × 1,066.88
4. Step 4: Simplify right side
   1,382.06x = 2,033,942.71
5. Step 5: Solve for x
   x = 2,033,942.71/1,382.06
6. Step 6: Final answer
   x = 1,471.67