Finding the Fourth Proportional to 7,142.88, 10,714.48 and 1,948.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142.88 : 10,714.48 = 1,948.76 : x
2. Step 2: Convert to fraction form
   7,142.88/10,714.48 = 1,948.76/x
3. Step 3: Cross multiply
   7,142.88x = 10,714.48 × 1,948.76
4. Step 4: Simplify right side
   7,142.88x = 20,879,931.78
5. Step 5: Solve for x
   x = 20,879,931.78/7,142.88
6. Step 6: Final answer
   x = 2,923.18