Finding the Fourth Proportional to 2,173.34, 2,998.74 and 1,289.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.34 : 2,998.74 = 1,289.42 : x
2. Step 2: Convert to fraction form
   2,173.34/2,998.74 = 1,289.42/x
3. Step 3: Cross multiply
   2,173.34x = 2,998.74 × 1,289.42
4. Step 4: Simplify right side
   2,173.34x = 3,866,635.33
5. Step 5: Solve for x
   x = 3,866,635.33/2,173.34
6. Step 6: Final answer
   x = 1,779.12