Finding the Fourth Proportional to 893,544, 1,233,090.72 and 491,136

Step by Step Solution

1. Step 1: Write the proportion equation
   893,544 : 1,233,090.72 = 491,136 : x
2. Step 2: Convert to fraction form
   893,544/1,233,090.72 = 491,136/x
3. Step 3: Cross multiply
   893,544x = 1,233,090.72 × 491,136
4. Step 4: Simplify right side
   893,544x = 605,615,243,857.92
5. Step 5: Solve for x
   x = 605,615,243,857.92/893,544
6. Step 6: Final answer
   x = 677,767.68