Finding the Fourth Proportional to 441,196.58, 661,780.82 and 262,506.26

Step by Step Solution

1. Step 1: Write the proportion equation
   441,196.58 : 661,780.82 = 262,506.26 : x
2. Step 2: Convert to fraction form
   441,196.58/661,780.82 = 262,506.26/x
3. Step 3: Cross multiply
   441,196.58x = 661,780.82 × 262,506.26
4. Step 4: Simplify right side
   441,196.58x = 173,721,607,997.93
5. Step 5: Solve for x
   x = 173,721,607,997.93/441,196.58
6. Step 6: Final answer
   x = 393,751.03