Finding the Fourth Proportional to 2,275.59, 3,140.98 and 1,489.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.59 : 3,140.98 = 1,489.69 : x
2. Step 2: Convert to fraction form
   2,275.59/3,140.98 = 1,489.69/x
3. Step 3: Cross multiply
   2,275.59x = 3,140.98 × 1,489.69
4. Step 4: Simplify right side
   2,275.59x = 4,679,086.70
5. Step 5: Solve for x
   x = 4,679,086.70/2,275.59
6. Step 6: Final answer
   x = 2,056.20