Finding the Fourth Proportional to 2,071.64, 2,857.02 and 2,061.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.64 : 2,857.02 = 2,061.30 : x
2. Step 2: Convert to fraction form
   2,071.64/2,857.02 = 2,061.30/x
3. Step 3: Cross multiply
   2,071.64x = 2,857.02 × 2,061.30
4. Step 4: Simplify right side
   2,071.64x = 5,889,175.33
5. Step 5: Solve for x
   x = 5,889,175.33/2,071.64
6. Step 6: Final answer
   x = 2,842.76