Finding the Fourth Proportional to 1,042,300.27, 1,562,388.27 and 442,879.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042,300.27 : 1,562,388.27 = 442,879.21 : x
2. Step 2: Convert to fraction form
   1,042,300.27/1,562,388.27 = 442,879.21/x
3. Step 3: Cross multiply
   1,042,300.27x = 1,562,388.27 × 442,879.21
4. Step 4: Simplify right side
   1,042,300.27x = 691,949,282,730.87
5. Step 5: Solve for x
   x = 691,949,282,730.87/1,042,300.27
6. Step 6: Final answer
   x = 663,867.51