Finding the Fourth Proportional to 789,820.28, 1,089,948.82 and 427,243.72

Step by Step Solution

1. Step 1: Write the proportion equation
   789,820.28 : 1,089,948.82 = 427,243.72 : x
2. Step 2: Convert to fraction form
   789,820.28/1,089,948.82 = 427,243.72/x
3. Step 3: Cross multiply
   789,820.28x = 1,089,948.82 × 427,243.72
4. Step 4: Simplify right side
   789,820.28x = 465,673,788,466.41
5. Step 5: Solve for x
   x = 465,673,788,466.41/789,820.28
6. Step 6: Final answer
   x = 589,594.62