Finding the Fourth Proportional to 2,337.89, 3,226.47 and 1,290.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,337.89 : 3,226.47 = 1,290.14 : x
2. Step 2: Convert to fraction form
   2,337.89/3,226.47 = 1,290.14/x
3. Step 3: Cross multiply
   2,337.89x = 3,226.47 × 1,290.14
4. Step 4: Simplify right side
   2,337.89x = 4,162,598.01
5. Step 5: Solve for x
   x = 4,162,598.01/2,337.89
6. Step 6: Final answer
   x = 1,780.49