Finding the Fourth Proportional to 2,972.35, 4,458.74 and 1,123.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,972.35 : 4,458.74 = 1,123.12 : x
2. Step 2: Convert to fraction form
   2,972.35/4,458.74 = 1,123.12/x
3. Step 3: Cross multiply
   2,972.35x = 4,458.74 × 1,123.12
4. Step 4: Simplify right side
   2,972.35x = 5,007,714.02
5. Step 5: Solve for x
   x = 5,007,714.02/2,972.35
6. Step 6: Final answer
   x = 1,684.76