Finding the Fourth Proportional to 3,846.84, 5,308.65 and 2,274.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,846.84 : 5,308.65 = 2,274.90 : x
2. Step 2: Convert to fraction form
   3,846.84/5,308.65 = 2,274.90/x
3. Step 3: Cross multiply
   3,846.84x = 5,308.65 × 2,274.90
4. Step 4: Simplify right side
   3,846.84x = 12,076,647.89
5. Step 5: Solve for x
   x = 12,076,647.89/3,846.84
6. Step 6: Final answer
   x = 3,139.37