Finding the Fourth Proportional to 1,856.04, 2,561.38 and 1,016.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.04 : 2,561.38 = 1,016.78 : x
2. Step 2: Convert to fraction form
   1,856.04/2,561.38 = 1,016.78/x
3. Step 3: Cross multiply
   1,856.04x = 2,561.38 × 1,016.78
4. Step 4: Simplify right side
   1,856.04x = 2,604,359.96
5. Step 5: Solve for x
   x = 2,604,359.96/1,856.04
6. Step 6: Final answer
   x = 1,403.18