Finding the Fourth Proportional to 1,078,663.83, 1,617,575.23 and 404,377.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,663.83 : 1,617,575.23 = 404,377.21 : x
2. Step 2: Convert to fraction form
   1,078,663.83/1,617,575.23 = 404,377.21/x
3. Step 3: Cross multiply
   1,078,663.83x = 1,617,575.23 × 404,377.21
4. Step 4: Simplify right side
   1,078,663.83x = 654,110,560,999.95
5. Step 5: Solve for x
   x = 654,110,560,999.95/1,078,663.83
6. Step 6: Final answer
   x = 606,408.17