Finding the Fourth Proportional to 2,064.76, 2,847.71 and 1,815.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.76 : 2,847.71 = 1,815.55 : x
2. Step 2: Convert to fraction form
   2,064.76/2,847.71 = 1,815.55/x
3. Step 3: Cross multiply
   2,064.76x = 2,847.71 × 1,815.55
4. Step 4: Simplify right side
   2,064.76x = 5,170,157.31
5. Step 5: Solve for x
   x = 5,170,157.31/2,064.76
6. Step 6: Final answer
   x = 2,504.00