Finding the Fourth Proportional to 2,172.38, 2,992.82 and 1,777.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.38 : 2,992.82 = 1,777.10 : x
2. Step 2: Convert to fraction form
   2,172.38/2,992.82 = 1,777.10/x
3. Step 3: Cross multiply
   2,172.38x = 2,992.82 × 1,777.10
4. Step 4: Simplify right side
   2,172.38x = 5,318,540.42
5. Step 5: Solve for x
   x = 5,318,540.42/2,172.38
6. Step 6: Final answer
   x = 2,448.26