Finding the Fourth Proportional to 1,929.42, 2,662.20 and 1,143.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,929.42 : 2,662.20 = 1,143.18 : x
2. Step 2: Convert to fraction form
   1,929.42/2,662.20 = 1,143.18/x
3. Step 3: Cross multiply
   1,929.42x = 2,662.20 × 1,143.18
4. Step 4: Simplify right side
   1,929.42x = 3,043,373.80
5. Step 5: Solve for x
   x = 3,043,373.80/1,929.42
6. Step 6: Final answer
   x = 1,577.35