Finding the Fourth Proportional to 1,997.52, 2,757.82 and 1,289.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.52 : 2,757.82 = 1,289.72 : x
2. Step 2: Convert to fraction form
   1,997.52/2,757.82 = 1,289.72/x
3. Step 3: Cross multiply
   1,997.52x = 2,757.82 × 1,289.72
4. Step 4: Simplify right side
   1,997.52x = 3,556,815.61
5. Step 5: Solve for x
   x = 3,556,815.61/1,997.52
6. Step 6: Final answer
   x = 1,780.62