Finding the Fourth Proportional to 2,064,586.80, 3,096,878.76 and 644,764.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064,586.80 : 3,096,878.76 = 644,764.56 : x
2. Step 2: Convert to fraction form
   2,064,586.80/3,096,878.76 = 644,764.56/x
3. Step 3: Cross multiply
   2,064,586.80x = 3,096,878.76 × 644,764.56
4. Step 4: Simplify right side
   2,064,586.80x = 1,996,757,671,064.75
5. Step 5: Solve for x
   x = 1,996,757,671,064.75/2,064,586.80
6. Step 6: Final answer
   x = 967,146.39