Finding the Fourth Proportional to 766,665.72, 1,057,281.05 and 605,904.81

Step by Step Solution

1. Step 1: Write the proportion equation
   766,665.72 : 1,057,281.05 = 605,904.81 : x
2. Step 2: Convert to fraction form
   766,665.72/1,057,281.05 = 605,904.81/x
3. Step 3: Cross multiply
   766,665.72x = 1,057,281.05 × 605,904.81
4. Step 4: Simplify right side
   766,665.72x = 640,611,679,196.42
5. Step 5: Solve for x
   x = 640,611,679,196.42/766,665.72
6. Step 6: Final answer
   x = 835,581.49