Finding the Fourth Proportional to 2,554.40, 3,832.48 and 1,320.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.40 : 3,832.48 = 1,320.56 : x
2. Step 2: Convert to fraction form
   2,554.40/3,832.48 = 1,320.56/x
3. Step 3: Cross multiply
   2,554.40x = 3,832.48 × 1,320.56
4. Step 4: Simplify right side
   2,554.40x = 5,061,019.79
5. Step 5: Solve for x
   x = 5,061,019.79/2,554.40
6. Step 6: Final answer
   x = 1,981.29