Finding the Fourth Proportional to 789,510.21, 1,089,499.52 and 445,341

Step by Step Solution

1. Step 1: Write the proportion equation
   789,510.21 : 1,089,499.52 = 445,341 : x
2. Step 2: Convert to fraction form
   789,510.21/1,089,499.52 = 445,341/x
3. Step 3: Cross multiply
   789,510.21x = 1,089,499.52 × 445,341
4. Step 4: Simplify right side
   789,510.21x = 485,198,803,509.62
5. Step 5: Solve for x
   x = 485,198,803,509.62/789,510.21
6. Step 6: Final answer
   x = 614,556.72