Finding the Fourth Proportional to 2,890.62, 4,332.56 and 1,330.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.62 : 4,332.56 = 1,330.81 : x
2. Step 2: Convert to fraction form
   2,890.62/4,332.56 = 1,330.81/x
3. Step 3: Cross multiply
   2,890.62x = 4,332.56 × 1,330.81
4. Step 4: Simplify right side
   2,890.62x = 5,765,796.69
5. Step 5: Solve for x
   x = 5,765,796.69/2,890.62
6. Step 6: Final answer
   x = 1,994.66