Finding the Fourth Proportional to 3,123.34, 4,680.37 and 1,272.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.34 : 4,680.37 = 1,272.19 : x
2. Step 2: Convert to fraction form
   3,123.34/4,680.37 = 1,272.19/x
3. Step 3: Cross multiply
   3,123.34x = 4,680.37 × 1,272.19
4. Step 4: Simplify right side
   3,123.34x = 5,954,319.91
5. Step 5: Solve for x
   x = 5,954,319.91/3,123.34
6. Step 6: Final answer
   x = 1,906.40