Finding the Fourth Proportional to 3,869.76, 5,805.36 and 1,274.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.76 : 5,805.36 = 1,274.52 : x
2. Step 2: Convert to fraction form
   3,869.76/5,805.36 = 1,274.52/x
3. Step 3: Cross multiply
   3,869.76x = 5,805.36 × 1,274.52
4. Step 4: Simplify right side
   3,869.76x = 7,399,047.43
5. Step 5: Solve for x
   x = 7,399,047.43/3,869.76
6. Step 6: Final answer
   x = 1,912.02