Finding the Fourth Proportional to 1,776,069.89, 2,663,443.45 and 638,521.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776,069.89 : 2,663,443.45 = 638,521.68 : x
2. Step 2: Convert to fraction form
   1,776,069.89/2,663,443.45 = 638,521.68/x
3. Step 3: Cross multiply
   1,776,069.89x = 2,663,443.45 × 638,521.68
4. Step 4: Simplify right side
   1,776,069.89x = 1,700,666,383,086.39
5. Step 5: Solve for x
   x = 1,700,666,383,086.39/1,776,069.89
6. Step 6: Final answer
   x = 957,544.74