Finding the Fourth Proportional to 3,606.72, 5,409.12 and 1,009.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.72 : 5,409.12 = 1,009.44 : x
2. Step 2: Convert to fraction form
   3,606.72/5,409.12 = 1,009.44/x
3. Step 3: Cross multiply
   3,606.72x = 5,409.12 × 1,009.44
4. Step 4: Simplify right side
   3,606.72x = 5,460,182.09
5. Step 5: Solve for x
   x = 5,460,182.09/3,606.72
6. Step 6: Final answer
   x = 1,513.89