Finding the Fourth Proportional to 1,360,388.86, 2,038,901.63 and 686,662.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360,388.86 : 2,038,901.63 = 686,662.28 : x
2. Step 2: Convert to fraction form
   1,360,388.86/2,038,901.63 = 686,662.28/x
3. Step 3: Cross multiply
   1,360,388.86x = 2,038,901.63 × 686,662.28
4. Step 4: Simplify right side
   1,360,388.86x = 1,400,036,835,969.58
5. Step 5: Solve for x
   x = 1,400,036,835,969.58/1,360,388.86
6. Step 6: Final answer
   x = 1,029,144.59