Finding the Fourth Proportional to 1,356,648.09, 1,872,504.59 and 813,105.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356,648.09 : 1,872,504.59 = 813,105.69 : x
2. Step 2: Convert to fraction form
   1,356,648.09/1,872,504.59 = 813,105.69/x
3. Step 3: Cross multiply
   1,356,648.09x = 1,872,504.59 × 813,105.69
4. Step 4: Simplify right side
   1,356,648.09x = 1,522,544,132,614.59
5. Step 5: Solve for x
   x = 1,522,544,132,614.59/1,356,648.09
6. Step 6: Final answer
   x = 1,122,283.77