Finding the Fourth Proportional to 3,761.28, 5,641.46 and 1,913.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,761.28 : 5,641.46 = 1,913.72 : x
2. Step 2: Convert to fraction form
   3,761.28/5,641.46 = 1,913.72/x
3. Step 3: Cross multiply
   3,761.28x = 5,641.46 × 1,913.72
4. Step 4: Simplify right side
   3,761.28x = 10,796,174.83
5. Step 5: Solve for x
   x = 10,796,174.83/3,761.28
6. Step 6: Final answer
   x = 2,870.35