Finding the Fourth Proportional to 2,552.89, 3,830.42 and 1,321.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,552.89 : 3,830.42 = 1,321.17 : x
2. Step 2: Convert to fraction form
   2,552.89/3,830.42 = 1,321.17/x
3. Step 3: Cross multiply
   2,552.89x = 3,830.42 × 1,321.17
4. Step 4: Simplify right side
   2,552.89x = 5,060,616.84
5. Step 5: Solve for x
   x = 5,060,616.84/2,552.89
6. Step 6: Final answer
   x = 1,982.31