Finding the Fourth Proportional to 770,844.27, 1,063,506.72 and 448,485.33

Step by Step Solution

1. Step 1: Write the proportion equation
   770,844.27 : 1,063,506.72 = 448,485.33 : x
2. Step 2: Convert to fraction form
   770,844.27/1,063,506.72 = 448,485.33/x
3. Step 3: Cross multiply
   770,844.27x = 1,063,506.72 × 448,485.33
4. Step 4: Simplify right side
   770,844.27x = 476,967,162,276.42
5. Step 5: Solve for x
   x = 476,967,162,276.42/770,844.27
6. Step 6: Final answer
   x = 618,759.43