Finding the Fourth Proportional to 1,929.16, 2,661.96 and 1,143.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,929.16 : 2,661.96 = 1,143.46 : x
2. Step 2: Convert to fraction form
   1,929.16/2,661.96 = 1,143.46/x
3. Step 3: Cross multiply
   1,929.16x = 2,661.96 × 1,143.46
4. Step 4: Simplify right side
   1,929.16x = 3,043,844.78
5. Step 5: Solve for x
   x = 3,043,844.78/1,929.16
6. Step 6: Final answer
   x = 1,577.81