Finding the Fourth Proportional to 1,077,921.72, 1,616,413.17 and 309,249.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,921.72 : 1,616,413.17 = 309,249.84 : x
2. Step 2: Convert to fraction form
   1,077,921.72/1,616,413.17 = 309,249.84/x
3. Step 3: Cross multiply
   1,077,921.72x = 1,616,413.17 × 309,249.84
4. Step 4: Simplify right side
   1,077,921.72x = 499,875,514,196.39
5. Step 5: Solve for x
   x = 499,875,514,196.39/1,077,921.72
6. Step 6: Final answer
   x = 463,740.09