Finding the Fourth Proportional to 2,124.73, 3,182.96 and 1,392.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.73 : 3,182.96 = 1,392.09 : x
2. Step 2: Convert to fraction form
   2,124.73/3,182.96 = 1,392.09/x
3. Step 3: Cross multiply
   2,124.73x = 3,182.96 × 1,392.09
4. Step 4: Simplify right side
   2,124.73x = 4,430,947.89
5. Step 5: Solve for x
   x = 4,430,947.89/2,124.73
6. Step 6: Final answer
   x = 2,085.42