Finding the Fourth Proportional to 853,791.76, 1,281,348.56 and 321,796.72

Step by Step Solution

1. Step 1: Write the proportion equation
   853,791.76 : 1,281,348.56 = 321,796.72 : x
2. Step 2: Convert to fraction form
   853,791.76/1,281,348.56 = 321,796.72/x
3. Step 3: Cross multiply
   853,791.76x = 1,281,348.56 × 321,796.72
4. Step 4: Simplify right side
   853,791.76x = 412,333,763,784.72
5. Step 5: Solve for x
   x = 412,333,763,784.72/853,791.76
6. Step 6: Final answer
   x = 482,944.18