Finding the Fourth Proportional to 1,834.68, 2,748.18 and 809.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,834.68 : 2,748.18 = 809.40 : x
2. Step 2: Convert to fraction form
   1,834.68/2,748.18 = 809.40/x
3. Step 3: Cross multiply
   1,834.68x = 2,748.18 × 809.40
4. Step 4: Simplify right side
   1,834.68x = 2,224,376.89
5. Step 5: Solve for x
   x = 2,224,376.89/1,834.68
6. Step 6: Final answer
   x = 1,212.41