Finding the Fourth Proportional to 1,259,820.25, 1,738,550.72 and 686,860.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259,820.25 : 1,738,550.72 = 686,860.27 : x
2. Step 2: Convert to fraction form
   1,259,820.25/1,738,550.72 = 686,860.27/x
3. Step 3: Cross multiply
   1,259,820.25x = 1,738,550.72 × 686,860.27
4. Step 4: Simplify right side
   1,259,820.25x = 1,194,141,404,820.84
5. Step 5: Solve for x
   x = 1,194,141,404,820.84/1,259,820.25
6. Step 6: Final answer
   x = 947,866.50