Finding the Fourth Proportional to 3,407.49, 5,109.86 and 1,066.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407.49 : 5,109.86 = 1,066.73 : x
2. Step 2: Convert to fraction form
   3,407.49/5,109.86 = 1,066.73/x
3. Step 3: Cross multiply
   3,407.49x = 5,109.86 × 1,066.73
4. Step 4: Simplify right side
   3,407.49x = 5,450,818.08
5. Step 5: Solve for x
   x = 5,450,818.08/3,407.49
6. Step 6: Final answer
   x = 1,599.66