Finding the Fourth Proportional to 743,982.80, 1,026,645.72 and 404,443.76

Step by Step Solution

1. Step 1: Write the proportion equation
   743,982.80 : 1,026,645.72 = 404,443.76 : x
2. Step 2: Convert to fraction form
   743,982.80/1,026,645.72 = 404,443.76/x
3. Step 3: Cross multiply
   743,982.80x = 1,026,645.72 × 404,443.76
4. Step 4: Simplify right side
   743,982.80x = 415,220,455,184.71
5. Step 5: Solve for x
   x = 415,220,455,184.71/743,982.80
6. Step 6: Final answer
   x = 558,104.91