Finding the Fourth Proportional to 3,648.72, 5,034.78 and 2,076.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.72 : 5,034.78 = 2,076.60 : x
2. Step 2: Convert to fraction form
   3,648.72/5,034.78 = 2,076.60/x
3. Step 3: Cross multiply
   3,648.72x = 5,034.78 × 2,076.60
4. Step 4: Simplify right side
   3,648.72x = 10,455,224.15
5. Step 5: Solve for x
   x = 10,455,224.15/3,648.72
6. Step 6: Final answer
   x = 2,865.45