Finding the Fourth Proportional to 2,559.73, 3,840.12 and 805.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.73 : 3,840.12 = 805.00 : x
2. Step 2: Convert to fraction form
   2,559.73/3,840.12 = 805.00/x
3. Step 3: Cross multiply
   2,559.73x = 3,840.12 × 805.00
4. Step 4: Simplify right side
   2,559.73x = 3,091,312.88
5. Step 5: Solve for x
   x = 3,091,312.88/2,559.73
6. Step 6: Final answer
   x = 1,207.67