Finding the Fourth Proportional to 705,788.82, 1,058,087.82 and 306,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   705,788.82 : 1,058,087.82 = 306,128.52 : x
2. Step 2: Convert to fraction form
   705,788.82/1,058,087.82 = 306,128.52/x
3. Step 3: Cross multiply
   705,788.82x = 1,058,087.82 × 306,128.52
4. Step 4: Simplify right side
   705,788.82x = 323,910,858,366.63
5. Step 5: Solve for x
   x = 323,910,858,366.63/705,788.82
6. Step 6: Final answer
   x = 458,934.53