Finding the Fourth Proportional to 1,433,674.12, 1,978,470.17 and 780,304.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433,674.12 : 1,978,470.17 = 780,304.82 : x
2. Step 2: Convert to fraction form
   1,433,674.12/1,978,470.17 = 780,304.82/x
3. Step 3: Cross multiply
   1,433,674.12x = 1,978,470.17 × 780,304.82
4. Step 4: Simplify right side
   1,433,674.12x = 1,543,809,809,844.58
5. Step 5: Solve for x
   x = 1,543,809,809,844.58/1,433,674.12
6. Step 6: Final answer
   x = 1,076,820.59