Finding the Fourth Proportional to 2,290.68, 3,433.20 and 1,056.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.68 : 3,433.20 = 1,056.42 : x
2. Step 2: Convert to fraction form
   2,290.68/3,433.20 = 1,056.42/x
3. Step 3: Cross multiply
   2,290.68x = 3,433.20 × 1,056.42
4. Step 4: Simplify right side
   2,290.68x = 3,626,901.14
5. Step 5: Solve for x
   x = 3,626,901.14/2,290.68
6. Step 6: Final answer
   x = 1,583.33