Finding the Fourth Proportional to 1,224,769.89, 1,690,086.69 and 680,872.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,769.89 : 1,690,086.69 = 680,872.58 : x
2. Step 2: Convert to fraction form
   1,224,769.89/1,690,086.69 = 680,872.58/x
3. Step 3: Cross multiply
   1,224,769.89x = 1,690,086.69 × 680,872.58
4. Step 4: Simplify right side
   1,224,769.89x = 1,150,733,676,593.53
5. Step 5: Solve for x
   x = 1,150,733,676,593.53/1,224,769.89
6. Step 6: Final answer
   x = 939,550.92