Finding the Fourth Proportional to 2,291.98, 3,160.06 and 1,871.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.98 : 3,160.06 = 1,871.86 : x
2. Step 2: Convert to fraction form
   2,291.98/3,160.06 = 1,871.86/x
3. Step 3: Cross multiply
   2,291.98x = 3,160.06 × 1,871.86
4. Step 4: Simplify right side
   2,291.98x = 5,915,189.91
5. Step 5: Solve for x
   x = 5,915,189.91/2,291.98
6. Step 6: Final answer
   x = 2,580.82