Finding the Fourth Proportional to 2,672.34, 3,676.11 and 2,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.34 : 3,676.11 = 2,173.89 : x
2. Step 2: Convert to fraction form
   2,672.34/3,676.11 = 2,173.89/x
3. Step 3: Cross multiply
   2,672.34x = 3,676.11 × 2,173.89
4. Step 4: Simplify right side
   2,672.34x = 7,991,458.77
5. Step 5: Solve for x
   x = 7,991,458.77/2,672.34
6. Step 6: Final answer
   x = 2,990.43