Finding the Fourth Proportional to 1,856.49, 2,561.85 and 1,017.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.49 : 2,561.85 = 1,017.02 : x
2. Step 2: Convert to fraction form
   1,856.49/2,561.85 = 1,017.02/x
3. Step 3: Cross multiply
   1,856.49x = 2,561.85 × 1,017.02
4. Step 4: Simplify right side
   1,856.49x = 2,605,452.69
5. Step 5: Solve for x
   x = 2,605,452.69/1,856.49
6. Step 6: Final answer
   x = 1,403.43