Finding the Fourth Proportional to 2,106.34, 3,160.15 and 1,491.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.34 : 3,160.15 = 1,491.23 : x
2. Step 2: Convert to fraction form
   2,106.34/3,160.15 = 1,491.23/x
3. Step 3: Cross multiply
   2,106.34x = 3,160.15 × 1,491.23
4. Step 4: Simplify right side
   2,106.34x = 4,712,514.66
5. Step 5: Solve for x
   x = 4,712,514.66/2,106.34
6. Step 6: Final answer
   x = 2,237.30