Finding the Fourth Proportional to 2,137.50, 2,947.73 and 1,392.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137.50 : 2,947.73 = 1,392.03 : x
2. Step 2: Convert to fraction form
   2,137.50/2,947.73 = 1,392.03/x
3. Step 3: Cross multiply
   2,137.50x = 2,947.73 × 1,392.03
4. Step 4: Simplify right side
   2,137.50x = 4,103,321.63
5. Step 5: Solve for x
   x = 4,103,321.63/2,137.50
6. Step 6: Final answer
   x = 1,919.68