Finding the Fourth Proportional to 584,018.88, 805,215.81 and 487,361.98

Step by Step Solution

1. Step 1: Write the proportion equation
   584,018.88 : 805,215.81 = 487,361.98 : x
2. Step 2: Convert to fraction form
   584,018.88/805,215.81 = 487,361.98/x
3. Step 3: Cross multiply
   584,018.88x = 805,215.81 × 487,361.98
4. Step 4: Simplify right side
   584,018.88x = 392,431,571,488.90
5. Step 5: Solve for x
   x = 392,431,571,488.90/584,018.88
6. Step 6: Final answer
   x = 671,950.15