Finding the Fourth Proportional to 2,245.78, 3,088.86 and 1,802.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.78 : 3,088.86 = 1,802.70 : x
2. Step 2: Convert to fraction form
   2,245.78/3,088.86 = 1,802.70/x
3. Step 3: Cross multiply
   2,245.78x = 3,088.86 × 1,802.70
4. Step 4: Simplify right side
   2,245.78x = 5,568,287.92
5. Step 5: Solve for x
   x = 5,568,287.92/2,245.78
6. Step 6: Final answer
   x = 2,479.44