Finding the Fourth Proportional to 3,719.09, 5,577.69 and 1,086.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,719.09 : 5,577.69 = 1,086.59 : x
2. Step 2: Convert to fraction form
   3,719.09/5,577.69 = 1,086.59/x
3. Step 3: Cross multiply
   3,719.09x = 5,577.69 × 1,086.59
4. Step 4: Simplify right side
   3,719.09x = 6,060,662.18
5. Step 5: Solve for x
   x = 6,060,662.18/3,719.09
6. Step 6: Final answer
   x = 1,629.61