Finding the Fourth Proportional to 3,774.18, 5,658.69 and 1,921.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,774.18 : 5,658.69 = 1,921.71 : x
2. Step 2: Convert to fraction form
   3,774.18/5,658.69 = 1,921.71/x
3. Step 3: Cross multiply
   3,774.18x = 5,658.69 × 1,921.71
4. Step 4: Simplify right side
   3,774.18x = 10,874,361.16
5. Step 5: Solve for x
   x = 10,874,361.16/3,774.18
6. Step 6: Final answer
   x = 2,881.25