Finding the Fourth Proportional to 1,281,386.14, 1,768,019.61 and 765,039.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281,386.14 : 1,768,019.61 = 765,039.76 : x
2. Step 2: Convert to fraction form
   1,281,386.14/1,768,019.61 = 765,039.76/x
3. Step 3: Cross multiply
   1,281,386.14x = 1,768,019.61 × 765,039.76
4. Step 4: Simplify right side
   1,281,386.14x = 1,352,605,298,109.69
5. Step 5: Solve for x
   x = 1,352,605,298,109.69/1,281,386.14
6. Step 6: Final answer
   x = 1,055,579.78