Finding the Fourth Proportional to 789,287.90, 1,089,581.63 and 462,555.77

Step by Step Solution

1. Step 1: Write the proportion equation
   789,287.90 : 1,089,581.63 = 462,555.77 : x
2. Step 2: Convert to fraction form
   789,287.90/1,089,581.63 = 462,555.77/x
3. Step 3: Cross multiply
   789,287.90x = 1,089,581.63 × 462,555.77
4. Step 4: Simplify right side
   789,287.90x = 503,992,262,081.82
5. Step 5: Solve for x
   x = 503,992,262,081.82/789,287.90
6. Step 6: Final answer
   x = 638,540.47