Finding the Fourth Proportional to 3,636.37, 5,455.50 and 1,039.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,636.37 : 5,455.50 = 1,039.51 : x
2. Step 2: Convert to fraction form
   3,636.37/5,455.50 = 1,039.51/x
3. Step 3: Cross multiply
   3,636.37x = 5,455.50 × 1,039.51
4. Step 4: Simplify right side
   3,636.37x = 5,671,046.81
5. Step 5: Solve for x
   x = 5,671,046.81/3,636.37
6. Step 6: Final answer
   x = 1,559.54