Finding the Fourth Proportional to 3,818.06, 5,723.56 and 2,648.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,818.06 : 5,723.56 = 2,648.61 : x
2. Step 2: Convert to fraction form
   3,818.06/5,723.56 = 2,648.61/x
3. Step 3: Cross multiply
   3,818.06x = 5,723.56 × 2,648.61
4. Step 4: Simplify right side
   3,818.06x = 15,159,492.29
5. Step 5: Solve for x
   x = 15,159,492.29/3,818.06
6. Step 6: Final answer
   x = 3,970.47