Finding the Fourth Proportional to 2,101.92, 3,151.82 and 1,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.92 : 3,151.82 = 1,224.72 : x
2. Step 2: Convert to fraction form
   2,101.92/3,151.82 = 1,224.72/x
3. Step 3: Cross multiply
   2,101.92x = 3,151.82 × 1,224.72
4. Step 4: Simplify right side
   2,101.92x = 3,860,096.99
5. Step 5: Solve for x
   x = 3,860,096.99/2,101.92
6. Step 6: Final answer
   x = 1,836.46