Finding the Fourth Proportional to 3,361.61, 5,047.88 and 2,071.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,361.61 : 5,047.88 = 2,071.28 : x
2. Step 2: Convert to fraction form
   3,361.61/5,047.88 = 2,071.28/x
3. Step 3: Cross multiply
   3,361.61x = 5,047.88 × 2,071.28
4. Step 4: Simplify right side
   3,361.61x = 10,455,572.89
5. Step 5: Solve for x
   x = 10,455,572.89/3,361.61
6. Step 6: Final answer
   x = 3,110.29