Finding the Fourth Proportional to 2,290.91, 3,433.55 and 974.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.91 : 3,433.55 = 974.12 : x
2. Step 2: Convert to fraction form
   2,290.91/3,433.55 = 974.12/x
3. Step 3: Cross multiply
   2,290.91x = 3,433.55 × 974.12
4. Step 4: Simplify right side
   2,290.91x = 3,344,667.69
5. Step 5: Solve for x
   x = 3,344,667.69/2,290.91
6. Step 6: Final answer
   x = 1,459.98