Finding the Fourth Proportional to 3,291.47, 4,540.86 and 2,156.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,291.47 : 4,540.86 = 2,156.83 : x
2. Step 2: Convert to fraction form
   3,291.47/4,540.86 = 2,156.83/x
3. Step 3: Cross multiply
   3,291.47x = 4,540.86 × 2,156.83
4. Step 4: Simplify right side
   3,291.47x = 9,793,851.72
5. Step 5: Solve for x
   x = 9,793,851.72/3,291.47
6. Step 6: Final answer
   x = 2,975.53