Finding the Fourth Proportional to 1,678,757.52, 2,518,435.49 and 781,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,757.52 : 2,518,435.49 = 781,212.72 : x
2. Step 2: Convert to fraction form
   1,678,757.52/2,518,435.49 = 781,212.72/x
3. Step 3: Cross multiply
   1,678,757.52x = 2,518,435.49 × 781,212.72
4. Step 4: Simplify right side
   1,678,757.52x = 1,967,433,839,287.43
5. Step 5: Solve for x
   x = 1,967,433,839,287.43/1,678,757.52
6. Step 6: Final answer
   x = 1,171,958.32