Finding the Fourth Proportional to 2,290.08, 3,160.32 and 1,242.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.08 : 3,160.32 = 1,242.24 : x
2. Step 2: Convert to fraction form
   2,290.08/3,160.32 = 1,242.24/x
3. Step 3: Cross multiply
   2,290.08x = 3,160.32 × 1,242.24
4. Step 4: Simplify right side
   2,290.08x = 3,925,875.92
5. Step 5: Solve for x
   x = 3,925,875.92/2,290.08
6. Step 6: Final answer
   x = 1,714.30