Finding the Fourth Proportional to 861,714.22, 1,293,161.76 and 300,748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   861,714.22 : 1,293,161.76 = 300,748.72 : x
2. Step 2: Convert to fraction form
   861,714.22/1,293,161.76 = 300,748.72/x
3. Step 3: Cross multiply
   861,714.22x = 1,293,161.76 × 300,748.72
4. Step 4: Simplify right side
   861,714.22x = 388,916,744,072.95
5. Step 5: Solve for x
   x = 388,916,744,072.95/861,714.22
6. Step 6: Final answer
   x = 451,329.15