Finding the Fourth Proportional to 1,078,676.73, 1,617,594.55 and 404,390.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,676.73 : 1,617,594.55 = 404,390.45 : x
2. Step 2: Convert to fraction form
   1,078,676.73/1,617,594.55 = 404,390.45/x
3. Step 3: Cross multiply
   1,078,676.73x = 1,617,594.55 × 404,390.45
4. Step 4: Simplify right side
   1,078,676.73x = 654,139,791,025.06
5. Step 5: Solve for x
   x = 654,139,791,025.06/1,078,676.73
6. Step 6: Final answer
   x = 606,428.02