Finding the Fourth Proportional to 3,764.14, 5,641.46 and 1,915.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.14 : 5,641.46 = 1,915.72 : x
2. Step 2: Convert to fraction form
   3,764.14/5,641.46 = 1,915.72/x
3. Step 3: Cross multiply
   3,764.14x = 5,641.46 × 1,915.72
4. Step 4: Simplify right side
   3,764.14x = 10,807,457.75
5. Step 5: Solve for x
   x = 10,807,457.75/3,764.14
6. Step 6: Final answer
   x = 2,871.16