Finding the Fourth Proportional to 2,337.94, 3,226.42 and 1,290.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,337.94 : 3,226.42 = 1,290.07 : x
2. Step 2: Convert to fraction form
   2,337.94/3,226.42 = 1,290.07/x
3. Step 3: Cross multiply
   2,337.94x = 3,226.42 × 1,290.07
4. Step 4: Simplify right side
   2,337.94x = 4,162,301.20
5. Step 5: Solve for x
   x = 4,162,301.20/2,337.94
6. Step 6: Final answer
   x = 1,780.33