Finding the Fourth Proportional to 1,855.31, 2,560.33 and 1,027.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.31 : 2,560.33 = 1,027.31 : x
2. Step 2: Convert to fraction form
   1,855.31/2,560.33 = 1,027.31/x
3. Step 3: Cross multiply
   1,855.31x = 2,560.33 × 1,027.31
4. Step 4: Simplify right side
   1,855.31x = 2,630,260.30
5. Step 5: Solve for x
   x = 2,630,260.30/1,855.31
6. Step 6: Final answer
   x = 1,417.69