Finding the Fourth Proportional to 2,287.79, 3,155.17 and 1,490.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.79 : 3,155.17 = 1,490.81 : x
2. Step 2: Convert to fraction form
   2,287.79/3,155.17 = 1,490.81/x
3. Step 3: Cross multiply
   2,287.79x = 3,155.17 × 1,490.81
4. Step 4: Simplify right side
   2,287.79x = 4,703,751.53
5. Step 5: Solve for x
   x = 4,703,751.53/2,287.79
6. Step 6: Final answer
   x = 2,056.02