Finding the Fourth Proportional to 1,855.89, 2,561.16 and 1,016.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.89 : 2,561.16 = 1,016.58 : x
2. Step 2: Convert to fraction form
   1,855.89/2,561.16 = 1,016.58/x
3. Step 3: Cross multiply
   1,855.89x = 2,561.16 × 1,016.58
4. Step 4: Simplify right side
   1,855.89x = 2,603,618.95
5. Step 5: Solve for x
   x = 2,603,618.95/1,855.89
6. Step 6: Final answer
   x = 1,402.90