Finding the Fourth Proportional to 3,381.78, 5,062.59 and 2,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,381.78 : 5,062.59 = 2,061.57 : x
2. Step 2: Convert to fraction form
   3,381.78/5,062.59 = 2,061.57/x
3. Step 3: Cross multiply
   3,381.78x = 5,062.59 × 2,061.57
4. Step 4: Simplify right side
   3,381.78x = 10,436,883.67
5. Step 5: Solve for x
   x = 10,436,883.67/3,381.78
6. Step 6: Final answer
   x = 3,086.21