Finding the Fourth Proportional to 3,406.48, 5,109.69 and 1,066.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,406.48 : 5,109.69 = 1,066.51 : x
2. Step 2: Convert to fraction form
   3,406.48/5,109.69 = 1,066.51/x
3. Step 3: Cross multiply
   3,406.48x = 5,109.69 × 1,066.51
4. Step 4: Simplify right side
   3,406.48x = 5,449,511.13
5. Step 5: Solve for x
   x = 5,449,511.13/3,406.48
6. Step 6: Final answer
   x = 1,599.75