Finding the Fourth Proportional to 2,290.34, 3,160.63 and 1,242.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.34 : 3,160.63 = 1,242.38 : x
2. Step 2: Convert to fraction form
   2,290.34/3,160.63 = 1,242.38/x
3. Step 3: Cross multiply
   2,290.34x = 3,160.63 × 1,242.38
4. Step 4: Simplify right side
   2,290.34x = 3,926,703.50
5. Step 5: Solve for x
   x = 3,926,703.50/2,290.34
6. Step 6: Final answer
   x = 1,714.46