Finding the Fourth Proportional to 3,549.94, 4,897.86 and 2,057.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,549.94 : 4,897.86 = 2,057.78 : x
2. Step 2: Convert to fraction form
   3,549.94/4,897.86 = 2,057.78/x
3. Step 3: Cross multiply
   3,549.94x = 4,897.86 × 2,057.78
4. Step 4: Simplify right side
   3,549.94x = 10,078,718.35
5. Step 5: Solve for x
   x = 10,078,718.35/3,549.94
6. Step 6: Final answer
   x = 2,839.12