Finding the Fourth Proportional to 1,309,808.96, 1,806,874.72 and 765,589.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,808.96 : 1,806,874.72 = 765,589.20 : x
2. Step 2: Convert to fraction form
   1,309,808.96/1,806,874.72 = 765,589.20/x
3. Step 3: Cross multiply
   1,309,808.96x = 1,806,874.72 × 765,589.20
4. Step 4: Simplify right side
   1,309,808.96x = 1,383,323,771,385.02
5. Step 5: Solve for x
   x = 1,383,323,771,385.02/1,309,808.96
6. Step 6: Final answer
   x = 1,056,126.36