Finding the Fourth Proportional to 2,072.10, 3,105.42 and 974.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.10 : 3,105.42 = 974.97 : x
2. Step 2: Convert to fraction form
   2,072.10/3,105.42 = 974.97/x
3. Step 3: Cross multiply
   2,072.10x = 3,105.42 × 974.97
4. Step 4: Simplify right side
   2,072.10x = 3,027,691.34
5. Step 5: Solve for x
   x = 3,027,691.34/2,072.10
6. Step 6: Final answer
   x = 1,461.17