Finding the Fourth Proportional to 861,731.82, 1,293,188.31 and 300,766.32

Step by Step Solution

1. Step 1: Write the proportion equation
   861,731.82 : 1,293,188.31 = 300,766.32 : x
2. Step 2: Convert to fraction form
   861,731.82/1,293,188.31 = 300,766.32/x
3. Step 3: Cross multiply
   861,731.82x = 1,293,188.31 × 300,766.32
4. Step 4: Simplify right side
   861,731.82x = 388,947,489,065.72
5. Step 5: Solve for x
   x = 388,947,489,065.72/861,731.82
6. Step 6: Final answer
   x = 451,355.61