Finding the Fourth Proportional to 2,290.27, 3,160.58 and 1,242.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.27 : 3,160.58 = 1,242.34 : x
2. Step 2: Convert to fraction form
   2,290.27/3,160.58 = 1,242.34/x
3. Step 3: Cross multiply
   2,290.27x = 3,160.58 × 1,242.34
4. Step 4: Simplify right side
   2,290.27x = 3,926,502.26
5. Step 5: Solve for x
   x = 3,926,502.26/2,290.27
6. Step 6: Final answer
   x = 1,714.43