Finding the Fourth Proportional to 2,128.93, 2,937.89 and 1,244.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.93 : 2,937.89 = 1,244.56 : x
2. Step 2: Convert to fraction form
   2,128.93/2,937.89 = 1,244.56/x
3. Step 3: Cross multiply
   2,128.93x = 2,937.89 × 1,244.56
4. Step 4: Simplify right side
   2,128.93x = 3,656,376.15
5. Step 5: Solve for x
   x = 3,656,376.15/2,128.93
6. Step 6: Final answer
   x = 1,717.47