Finding the Fourth Proportional to 2,790.09, 4,185.03 and 1,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790.09 : 4,185.03 = 1,146.72 : x
2. Step 2: Convert to fraction form
   2,790.09/4,185.03 = 1,146.72/x
3. Step 3: Cross multiply
   2,790.09x = 4,185.03 × 1,146.72
4. Step 4: Simplify right side
   2,790.09x = 4,799,057.60
5. Step 5: Solve for x
   x = 4,799,057.60/2,790.09
6. Step 6: Final answer
   x = 1,720.04