Finding the Fourth Proportional to 2,971.87, 4,458.78 and 1,123.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,971.87 : 4,458.78 = 1,123.13 : x
2. Step 2: Convert to fraction form
   2,971.87/4,458.78 = 1,123.13/x
3. Step 3: Cross multiply
   2,971.87x = 4,458.78 × 1,123.13
4. Step 4: Simplify right side
   2,971.87x = 5,007,800.73
5. Step 5: Solve for x
   x = 5,007,800.73/2,971.87
6. Step 6: Final answer
   x = 1,685.07