Finding the Fourth Proportional to 3,071.62, 4,608.12 and 1,123.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.62 : 4,608.12 = 1,123.82 : x
2. Step 2: Convert to fraction form
   3,071.62/4,608.12 = 1,123.82/x
3. Step 3: Cross multiply
   3,071.62x = 4,608.12 × 1,123.82
4. Step 4: Simplify right side
   3,071.62x = 5,178,697.42
5. Step 5: Solve for x
   x = 5,178,697.42/3,071.62
6. Step 6: Final answer
   x = 1,685.98