Finding the Fourth Proportional to 2,659.56, 3,985.68 and 1,358.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.56 : 3,985.68 = 1,358.31 : x
2. Step 2: Convert to fraction form
   2,659.56/3,985.68 = 1,358.31/x
3. Step 3: Cross multiply
   2,659.56x = 3,985.68 × 1,358.31
4. Step 4: Simplify right side
   2,659.56x = 5,413,789.00
5. Step 5: Solve for x
   x = 5,413,789.00/2,659.56
6. Step 6: Final answer
   x = 2,035.60