Finding the Fourth Proportional to 3,086.55, 4,259.52 and 1,891.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.55 : 4,259.52 = 1,891.40 : x
2. Step 2: Convert to fraction form
   3,086.55/4,259.52 = 1,891.40/x
3. Step 3: Cross multiply
   3,086.55x = 4,259.52 × 1,891.40
4. Step 4: Simplify right side
   3,086.55x = 8,056,434.83
5. Step 5: Solve for x
   x = 8,056,434.83/3,086.55
6. Step 6: Final answer
   x = 2,610.17