Finding the Fourth Proportional to 715,540.37, 987,424.83 and 409,606.61

Step by Step Solution

1. Step 1: Write the proportion equation
   715,540.37 : 987,424.83 = 409,606.61 : x
2. Step 2: Convert to fraction form
   715,540.37/987,424.83 = 409,606.61/x
3. Step 3: Cross multiply
   715,540.37x = 987,424.83 × 409,606.61
4. Step 4: Simplify right side
   715,540.37x = 404,455,732,309.00
5. Step 5: Solve for x
   x = 404,455,732,309.00/715,540.37
6. Step 6: Final answer
   x = 565,245.17