Finding the Fourth Proportional to 2,123.49, 2,930.67 and 1,284.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.49 : 2,930.67 = 1,284.33 : x
2. Step 2: Convert to fraction form
   2,123.49/2,930.67 = 1,284.33/x
3. Step 3: Cross multiply
   2,123.49x = 2,930.67 × 1,284.33
4. Step 4: Simplify right side
   2,123.49x = 3,763,947.40
5. Step 5: Solve for x
   x = 3,763,947.40/2,123.49
6. Step 6: Final answer
   x = 1,772.53