Finding the Fourth Proportional to 778,856.31, 1,074,654.89 and 585,470.84

Step by Step Solution

1. Step 1: Write the proportion equation
   778,856.31 : 1,074,654.89 = 585,470.84 : x
2. Step 2: Convert to fraction form
   778,856.31/1,074,654.89 = 585,470.84/x
3. Step 3: Cross multiply
   778,856.31x = 1,074,654.89 × 585,470.84
4. Step 4: Simplify right side
   778,856.31x = 629,179,098,346.57
5. Step 5: Solve for x
   x = 629,179,098,346.57/778,856.31
6. Step 6: Final answer
   x = 807,824.36