Finding the Fourth Proportional to 2,656.56, 3,981.18 and 1,355.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.56 : 3,981.18 = 1,355.31 : x
2. Step 2: Convert to fraction form
   2,656.56/3,981.18 = 1,355.31/x
3. Step 3: Cross multiply
   2,656.56x = 3,981.18 × 1,355.31
4. Step 4: Simplify right side
   2,656.56x = 5,395,733.07
5. Step 5: Solve for x
   x = 5,395,733.07/2,656.56
6. Step 6: Final answer
   x = 2,031.10