Finding the Fourth Proportional to 1,309,434.72, 1,806,748.92 and 765,465.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,434.72 : 1,806,748.92 = 765,465.36 : x
2. Step 2: Convert to fraction form
   1,309,434.72/1,806,748.92 = 765,465.36/x
3. Step 3: Cross multiply
   1,309,434.72x = 1,806,748.92 × 765,465.36
4. Step 4: Simplify right side
   1,309,434.72x = 1,383,003,712,477.41
5. Step 5: Solve for x
   x = 1,383,003,712,477.41/1,309,434.72
6. Step 6: Final answer
   x = 1,056,183.78