Finding the Fourth Proportional to 2,686.57, 3,707.98 and 1,742.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.57 : 3,707.98 = 1,742.31 : x
2. Step 2: Convert to fraction form
   2,686.57/3,707.98 = 1,742.31/x
3. Step 3: Cross multiply
   2,686.57x = 3,707.98 × 1,742.31
4. Step 4: Simplify right side
   2,686.57x = 6,460,446.28
5. Step 5: Solve for x
   x = 6,460,446.28/2,686.57
6. Step 6: Final answer
   x = 2,404.72