Finding the Fourth Proportional to 2,290.06, 3,160.31 and 1,242.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.06 : 3,160.31 = 1,242.14 : x
2. Step 2: Convert to fraction form
   2,290.06/3,160.31 = 1,242.14/x
3. Step 3: Cross multiply
   2,290.06x = 3,160.31 × 1,242.14
4. Step 4: Simplify right side
   2,290.06x = 3,925,547.46
5. Step 5: Solve for x
   x = 3,925,547.46/2,290.06
6. Step 6: Final answer
   x = 1,714.17