Finding the Fourth Proportional to 2,111.76, 3,147.30 and 2,108.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.76 : 3,147.30 = 2,108.52 : x
2. Step 2: Convert to fraction form
   2,111.76/3,147.30 = 2,108.52/x
3. Step 3: Cross multiply
   2,111.76x = 3,147.30 × 2,108.52
4. Step 4: Simplify right side
   2,111.76x = 6,636,145.00
5. Step 5: Solve for x
   x = 6,636,145.00/2,111.76
6. Step 6: Final answer
   x = 3,142.47