Finding the Fourth Proportional to 1,078,663.51, 1,617,574.70 and 404,377.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,663.51 : 1,617,574.70 = 404,377.25 : x
2. Step 2: Convert to fraction form
   1,078,663.51/1,617,574.70 = 404,377.25/x
3. Step 3: Cross multiply
   1,078,663.51x = 1,617,574.70 × 404,377.25
4. Step 4: Simplify right side
   1,078,663.51x = 654,110,413,910.46
5. Step 5: Solve for x
   x = 654,110,413,910.46/1,078,663.51
6. Step 6: Final answer
   x = 606,408.22