Finding the Fourth Proportional to 2,290.04, 3,160.26 and 1,242.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.04 : 3,160.26 = 1,242.10 : x
2. Step 2: Convert to fraction form
   2,290.04/3,160.26 = 1,242.10/x
3. Step 3: Cross multiply
   2,290.04x = 3,160.26 × 1,242.10
4. Step 4: Simplify right side
   2,290.04x = 3,925,358.95
5. Step 5: Solve for x
   x = 3,925,358.95/2,290.04
6. Step 6: Final answer
   x = 1,714.10