Finding the Fourth Proportional to 1,152,304.21, 1,729,227.77 and 478,386.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,304.21 : 1,729,227.77 = 478,386.09 : x
2. Step 2: Convert to fraction form
   1,152,304.21/1,729,227.77 = 478,386.09/x
3. Step 3: Cross multiply
   1,152,304.21x = 1,729,227.77 × 478,386.09
4. Step 4: Simplify right side
   1,152,304.21x = 827,238,511,609.72
5. Step 5: Solve for x
   x = 827,238,511,609.72/1,152,304.21
6. Step 6: Final answer
   x = 717,899.41