Finding the Fourth Proportional to 823,663.30, 1,236,293.86 and 397,499.04

Step by Step Solution

1. Step 1: Write the proportion equation
   823,663.30 : 1,236,293.86 = 397,499.04 : x
2. Step 2: Convert to fraction form
   823,663.30/1,236,293.86 = 397,499.04/x
3. Step 3: Cross multiply
   823,663.30x = 1,236,293.86 × 397,499.04
4. Step 4: Simplify right side
   823,663.30x = 491,425,622,507.89
5. Step 5: Solve for x
   x = 491,425,622,507.89/823,663.30
6. Step 6: Final answer
   x = 596,634.11