Finding the Fourth Proportional to 2,753.76, 4,128.72 and 1,021.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.76 : 4,128.72 = 1,021.92 : x
2. Step 2: Convert to fraction form
   2,753.76/4,128.72 = 1,021.92/x
3. Step 3: Cross multiply
   2,753.76x = 4,128.72 × 1,021.92
4. Step 4: Simplify right side
   2,753.76x = 4,219,221.54
5. Step 5: Solve for x
   x = 4,219,221.54/2,753.76
6. Step 6: Final answer
   x = 1,532.17