Finding the Fourth Proportional to 2,559.16, 3,835.86 and 1,261.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.16 : 3,835.86 = 1,261.54 : x
2. Step 2: Convert to fraction form
   2,559.16/3,835.86 = 1,261.54/x
3. Step 3: Cross multiply
   2,559.16x = 3,835.86 × 1,261.54
4. Step 4: Simplify right side
   2,559.16x = 4,839,090.82
5. Step 5: Solve for x
   x = 4,839,090.82/2,559.16
6. Step 6: Final answer
   x = 1,890.89