Finding the Fourth Proportional to 2,071.08, 2,857.50 and 1,285.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.08 : 2,857.50 = 1,285.14 : x
2. Step 2: Convert to fraction form
   2,071.08/2,857.50 = 1,285.14/x
3. Step 3: Cross multiply
   2,071.08x = 2,857.50 × 1,285.14
4. Step 4: Simplify right side
   2,071.08x = 3,672,287.55
5. Step 5: Solve for x
   x = 3,672,287.55/2,071.08
6. Step 6: Final answer
   x = 1,773.13