Finding the Fourth Proportional to 1,078,061.46, 1,616,618.78 and 403,669.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,061.46 : 1,616,618.78 = 403,669.86 : x
2. Step 2: Convert to fraction form
   1,078,061.46/1,616,618.78 = 403,669.86/x
3. Step 3: Cross multiply
   1,078,061.46x = 1,616,618.78 × 403,669.86
4. Step 4: Simplify right side
   1,078,061.46x = 652,580,276,595.97
5. Step 5: Solve for x
   x = 652,580,276,595.97/1,078,061.46
6. Step 6: Final answer
   x = 605,327.53