Finding the Fourth Proportional to 3,407.08, 5,109.20 and 1,066.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407.08 : 5,109.20 = 1,066.28 : x
2. Step 2: Convert to fraction form
   3,407.08/5,109.20 = 1,066.28/x
3. Step 3: Cross multiply
   3,407.08x = 5,109.20 × 1,066.28
4. Step 4: Simplify right side
   3,407.08x = 5,447,837.78
5. Step 5: Solve for x
   x = 5,447,837.78/3,407.08
6. Step 6: Final answer
   x = 1,598.98