Finding the Fourth Proportional to 1,012,645.39, 1,519,300.69 and 414,109.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,645.39 : 1,519,300.69 = 414,109.97 : x
2. Step 2: Convert to fraction form
   1,012,645.39/1,519,300.69 = 414,109.97/x
3. Step 3: Cross multiply
   1,012,645.39x = 1,519,300.69 × 414,109.97
4. Step 4: Simplify right side
   1,012,645.39x = 629,157,555,560.38
5. Step 5: Solve for x
   x = 629,157,555,560.38/1,012,645.39
6. Step 6: Final answer
   x = 621,300.96