Finding the Fourth Proportional to 2,666,443.50, 3,999,665.25 and 671,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666,443.50 : 3,999,665.25 = 671,899.50 : x
2. Step 2: Convert to fraction form
   2,666,443.50/3,999,665.25 = 671,899.50/x
3. Step 3: Cross multiply
   2,666,443.50x = 3,999,665.25 × 671,899.50
4. Step 4: Simplify right side
   2,666,443.50x = 2,687,373,081,642.38
5. Step 5: Solve for x
   x = 2,687,373,081,642.38/2,666,443.50
6. Step 6: Final answer
   x = 1,007,849.25