Finding the Fourth Proportional to 3,071.86, 4,606.56 and 1,123.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.86 : 4,606.56 = 1,123.60 : x
2. Step 2: Convert to fraction form
   3,071.86/4,606.56 = 1,123.60/x
3. Step 3: Cross multiply
   3,071.86x = 4,606.56 × 1,123.60
4. Step 4: Simplify right side
   3,071.86x = 5,175,930.82
5. Step 5: Solve for x
   x = 5,175,930.82/3,071.86
6. Step 6: Final answer
   x = 1,684.95