Finding the Fourth Proportional to 2,972.69, 4,458.15 and 1,122.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,972.69 : 4,458.15 = 1,122.42 : x
2. Step 2: Convert to fraction form
   2,972.69/4,458.15 = 1,122.42/x
3. Step 3: Cross multiply
   2,972.69x = 4,458.15 × 1,122.42
4. Step 4: Simplify right side
   2,972.69x = 5,003,916.72
5. Step 5: Solve for x
   x = 5,003,916.72/2,972.69
6. Step 6: Final answer
   x = 1,683.30