Finding the Fourth Proportional to 3,764.96, 5,647.61 and 1,915.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.96 : 5,647.61 = 1,915.55 : x
2. Step 2: Convert to fraction form
   3,764.96/5,647.61 = 1,915.55/x
3. Step 3: Cross multiply
   3,764.96x = 5,647.61 × 1,915.55
4. Step 4: Simplify right side
   3,764.96x = 10,818,255.89
5. Step 5: Solve for x
   x = 10,818,255.89/3,764.96
6. Step 6: Final answer
   x = 2,873.41