Finding the Fourth Proportional to 1,996.81, 2,754.83 and 1,288.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.81 : 2,754.83 = 1,288.46 : x
2. Step 2: Convert to fraction form
   1,996.81/2,754.83 = 1,288.46/x
3. Step 3: Cross multiply
   1,996.81x = 2,754.83 × 1,288.46
4. Step 4: Simplify right side
   1,996.81x = 3,549,498.37
5. Step 5: Solve for x
   x = 3,549,498.37/1,996.81
6. Step 6: Final answer
   x = 1,777.59