Finding the Fourth Proportional to 2,148.69, 3,222.86 and 849.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.69 : 3,222.86 = 849.81 : x
2. Step 2: Convert to fraction form
   2,148.69/3,222.86 = 849.81/x
3. Step 3: Cross multiply
   2,148.69x = 3,222.86 × 849.81
4. Step 4: Simplify right side
   2,148.69x = 2,738,814.41
5. Step 5: Solve for x
   x = 2,738,814.41/2,148.69
6. Step 6: Final answer
   x = 1,274.64