Finding the Fourth Proportional to 1,433,928.18, 1,978,846.06 and 780,573

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433,928.18 : 1,978,846.06 = 780,573 : x
2. Step 2: Convert to fraction form
   1,433,928.18/1,978,846.06 = 780,573/x
3. Step 3: Cross multiply
   1,433,928.18x = 1,978,846.06 × 780,573
4. Step 4: Simplify right side
   1,433,928.18x = 1,544,633,805,592.38
5. Step 5: Solve for x
   x = 1,544,633,805,592.38/1,433,928.18
6. Step 6: Final answer
   x = 1,077,204.44