Finding the Fourth Proportional to 1,425,469.31, 1,967,196.59 and 780,889.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425,469.31 : 1,967,196.59 = 780,889.33 : x
2. Step 2: Convert to fraction form
   1,425,469.31/1,967,196.59 = 780,889.33/x
3. Step 3: Cross multiply
   1,425,469.31x = 1,967,196.59 × 780,889.33
4. Step 4: Simplify right side
   1,425,469.31x = 1,536,162,828,626.27
5. Step 5: Solve for x
   x = 1,536,162,828,626.27/1,425,469.31
6. Step 6: Final answer
   x = 1,077,654.09