Finding the Fourth Proportional to 2,180.55, 3,009.94 and 1,296.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.55 : 3,009.94 = 1,296.35 : x
2. Step 2: Convert to fraction form
   2,180.55/3,009.94 = 1,296.35/x
3. Step 3: Cross multiply
   2,180.55x = 3,009.94 × 1,296.35
4. Step 4: Simplify right side
   2,180.55x = 3,901,940.00
5. Step 5: Solve for x
   x = 3,901,940.00/2,180.55
6. Step 6: Final answer
   x = 1,789.43