Finding the Fourth Proportional to 1,428,045.63, 2,141,018.69 and 680,616.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,045.63 : 2,141,018.69 = 680,616.51 : x
2. Step 2: Convert to fraction form
   1,428,045.63/2,141,018.69 = 680,616.51/x
3. Step 3: Cross multiply
   1,428,045.63x = 2,141,018.69 × 680,616.51
4. Step 4: Simplify right side
   1,428,045.63x = 1,457,212,665,229.49
5. Step 5: Solve for x
   x = 1,457,212,665,229.49/1,428,045.63
6. Step 6: Final answer
   x = 1,020,424.44