Finding the Fourth Proportional to 1,489.59, 2,230.56 and 1,445.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.59 : 2,230.56 = 1,445.81 : x
2. Step 2: Convert to fraction form
   1,489.59/2,230.56 = 1,445.81/x
3. Step 3: Cross multiply
   1,489.59x = 2,230.56 × 1,445.81
4. Step 4: Simplify right side
   1,489.59x = 3,224,954.80
5. Step 5: Solve for x
   x = 3,224,954.80/1,489.59
6. Step 6: Final answer
   x = 2,164.99