Finding the Fourth Proportional to 2,553.12, 3,818.88 and 2,388.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.12 : 3,818.88 = 2,388.96 : x
2. Step 2: Convert to fraction form
   2,553.12/3,818.88 = 2,388.96/x
3. Step 3: Cross multiply
   2,553.12x = 3,818.88 × 2,388.96
4. Step 4: Simplify right side
   2,553.12x = 9,123,151.56
5. Step 5: Solve for x
   x = 9,123,151.56/2,553.12
6. Step 6: Final answer
   x = 3,573.33