Finding the Fourth Proportional to 2,290.76, 3,429.46 and 2,071.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.76 : 3,429.46 = 2,071.90 : x
2. Step 2: Convert to fraction form
   2,290.76/3,429.46 = 2,071.90/x
3. Step 3: Cross multiply
   2,290.76x = 3,429.46 × 2,071.90
4. Step 4: Simplify right side
   2,290.76x = 7,105,474.11
5. Step 5: Solve for x
   x = 7,105,474.11/2,290.76
6. Step 6: Final answer
   x = 3,101.79