Finding the Fourth Proportional to 2,290.38, 3,435.60 and 974.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.38 : 3,435.60 = 974.18 : x
2. Step 2: Convert to fraction form
   2,290.38/3,435.60 = 974.18/x
3. Step 3: Cross multiply
   2,290.38x = 3,435.60 × 974.18
4. Step 4: Simplify right side
   2,290.38x = 3,346,892.81
5. Step 5: Solve for x
   x = 3,346,892.81/2,290.38
6. Step 6: Final answer
   x = 1,461.28