Finding the Fourth Proportional to 1,078,768.63, 1,617,676.33 and 404,376.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,768.63 : 1,617,676.33 = 404,376.90 : x
2. Step 2: Convert to fraction form
   1,078,768.63/1,617,676.33 = 404,376.90/x
3. Step 3: Cross multiply
   1,078,768.63x = 1,617,676.33 × 404,376.90
4. Step 4: Simplify right side
   1,078,768.63x = 654,150,939,528.78
5. Step 5: Solve for x
   x = 654,150,939,528.78/1,078,768.63
6. Step 6: Final answer
   x = 606,386.69