Finding the Fourth Proportional to 2,064,580.80, 3,096,869.76 and 644,758.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064,580.80 : 3,096,869.76 = 644,758.56 : x
2. Step 2: Convert to fraction form
   2,064,580.80/3,096,869.76 = 644,758.56/x
3. Step 3: Cross multiply
   2,064,580.80x = 3,096,869.76 × 644,758.56
4. Step 4: Simplify right side
   2,064,580.80x = 1,996,733,286,965.15
5. Step 5: Solve for x
   x = 1,996,733,286,965.15/2,064,580.80
6. Step 6: Final answer
   x = 967,137.39