Finding the Fourth Proportional to 2,128.32, 2,937.12 and 1,244.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.32 : 2,937.12 = 1,244.76 : x
2. Step 2: Convert to fraction form
   2,128.32/2,937.12 = 1,244.76/x
3. Step 3: Cross multiply
   2,128.32x = 2,937.12 × 1,244.76
4. Step 4: Simplify right side
   2,128.32x = 3,656,009.49
5. Step 5: Solve for x
   x = 3,656,009.49/2,128.32
6. Step 6: Final answer
   x = 1,717.79