Finding the Fourth Proportional to 766,268.16, 1,057,164.16 and 765,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   766,268.16 : 1,057,164.16 = 765,086.72 : x
2. Step 2: Convert to fraction form
   766,268.16/1,057,164.16 = 765,086.72/x
3. Step 3: Cross multiply
   766,268.16x = 1,057,164.16 × 765,086.72
4. Step 4: Simplify right side
   766,268.16x = 808,822,259,675.96
5. Step 5: Solve for x
   x = 808,822,259,675.96/766,268.16
6. Step 6: Final answer
   x = 1,055,534.21