Finding the Fourth Proportional to 2,308,673.88, 3,185,964.90 and 1,290,078.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308,673.88 : 3,185,964.90 = 1,290,078.63 : x
2. Step 2: Convert to fraction form
   2,308,673.88/3,185,964.90 = 1,290,078.63/x
3. Step 3: Cross multiply
   2,308,673.88x = 3,185,964.90 × 1,290,078.63
4. Step 4: Simplify right side
   2,308,673.88x = 4,110,145,233,420.09
5. Step 5: Solve for x
   x = 4,110,145,233,420.09/2,308,673.88
6. Step 6: Final answer
   x = 1,780,305.69