Finding the Fourth Proportional to 804,030.45, 1,206,072.31 and 404,453.49

Step by Step Solution

1. Step 1: Write the proportion equation
   804,030.45 : 1,206,072.31 = 404,453.49 : x
2. Step 2: Convert to fraction form
   804,030.45/1,206,072.31 = 404,453.49/x
3. Step 3: Cross multiply
   804,030.45x = 1,206,072.31 × 404,453.49
4. Step 4: Simplify right side
   804,030.45x = 487,800,150,196.31
5. Step 5: Solve for x
   x = 487,800,150,196.31/804,030.45
6. Step 6: Final answer
   x = 606,693.63