Finding the Fourth Proportional to 2,987.01, 4,471.27 and 2,731.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,987.01 : 4,471.27 = 2,731.86 : x
2. Step 2: Convert to fraction form
   2,987.01/4,471.27 = 2,731.86/x
3. Step 3: Cross multiply
   2,987.01x = 4,471.27 × 2,731.86
4. Step 4: Simplify right side
   2,987.01x = 12,214,876.83
5. Step 5: Solve for x
   x = 12,214,876.83/2,987.01
6. Step 6: Final answer
   x = 4,089.33