Finding the Fourth Proportional to 927,111.09, 1,388,796.75 and 776,929.80

Step by Step Solution

1. Step 1: Write the proportion equation
   927,111.09 : 1,388,796.75 = 776,929.80 : x
2. Step 2: Convert to fraction form
   927,111.09/1,388,796.75 = 776,929.80/x
3. Step 3: Cross multiply
   927,111.09x = 1,388,796.75 × 776,929.80
4. Step 4: Simplify right side
   927,111.09x = 1,078,997,581,218.15
5. Step 5: Solve for x
   x = 1,078,997,581,218.15/927,111.09
6. Step 6: Final answer
   x = 1,163,827.71