Finding the Fourth Proportional to 2,147.71, 3,218.74 and 1,556.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.71 : 3,218.74 = 1,556.71 : x
2. Step 2: Convert to fraction form
   2,147.71/3,218.74 = 1,556.71/x
3. Step 3: Cross multiply
   2,147.71x = 3,218.74 × 1,556.71
4. Step 4: Simplify right side
   2,147.71x = 5,010,644.75
5. Step 5: Solve for x
   x = 5,010,644.75/2,147.71
6. Step 6: Final answer
   x = 2,333.02