Finding the Fourth Proportional to 2,554.76, 3,830.19 and 1,321.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.76 : 3,830.19 = 1,321.39 : x
2. Step 2: Convert to fraction form
   2,554.76/3,830.19 = 1,321.39/x
3. Step 3: Cross multiply
   2,554.76x = 3,830.19 × 1,321.39
4. Step 4: Simplify right side
   2,554.76x = 5,061,174.76
5. Step 5: Solve for x
   x = 5,061,174.76/2,554.76
6. Step 6: Final answer
   x = 1,981.08