Finding the Fourth Proportional to 1,821.89, 2,729.85 and 1,274.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821.89 : 2,729.85 = 1,274.69 : x
2. Step 2: Convert to fraction form
   1,821.89/2,729.85 = 1,274.69/x
3. Step 3: Cross multiply
   1,821.89x = 2,729.85 × 1,274.69
4. Step 4: Simplify right side
   1,821.89x = 3,479,698.85
5. Step 5: Solve for x
   x = 3,479,698.85/1,821.89
6. Step 6: Final answer
   x = 1,909.94