Finding the Fourth Proportional to 1,296,065.37, 1,944,109.61 and 397,511.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296,065.37 : 1,944,109.61 = 397,511.31 : x
2. Step 2: Convert to fraction form
   1,296,065.37/1,944,109.61 = 397,511.31/x
3. Step 3: Cross multiply
   1,296,065.37x = 1,944,109.61 × 397,511.31
4. Step 4: Simplify right side
   1,296,065.37x = 772,805,557,854.69
5. Step 5: Solve for x
   x = 772,805,557,854.69/1,296,065.37
6. Step 6: Final answer
   x = 596,270.51