Finding the Fourth Proportional to 2,128.94, 2,937.25 and 1,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.94 : 2,937.25 = 1,383.50 : x
2. Step 2: Convert to fraction form
   2,128.94/2,937.25 = 1,383.50/x
3. Step 3: Cross multiply
   2,128.94x = 2,937.25 × 1,383.50
4. Step 4: Simplify right side
   2,128.94x = 4,063,685.38
5. Step 5: Solve for x
   x = 4,063,685.38/2,128.94
6. Step 6: Final answer
   x = 1,908.78