Finding the Fourth Proportional to 3,714.78, 5,123.57 and 2,370.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,714.78 : 5,123.57 = 2,370.80 : x
2. Step 2: Convert to fraction form
   3,714.78/5,123.57 = 2,370.80/x
3. Step 3: Cross multiply
   3,714.78x = 5,123.57 × 2,370.80
4. Step 4: Simplify right side
   3,714.78x = 12,146,922.28
5. Step 5: Solve for x
   x = 12,146,922.28/3,714.78
6. Step 6: Final answer
   x = 3,269.89