Finding the Fourth Proportional to 3,142.17, 4,714.80 and 2,223.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,142.17 : 4,714.80 = 2,223.63 : x
2. Step 2: Convert to fraction form
   3,142.17/4,714.80 = 2,223.63/x
3. Step 3: Cross multiply
   3,142.17x = 4,714.80 × 2,223.63
4. Step 4: Simplify right side
   3,142.17x = 10,483,970.72
5. Step 5: Solve for x
   x = 10,483,970.72/3,142.17
6. Step 6: Final answer
   x = 3,336.54