Finding the Fourth Proportional to 2,790.72, 4,182.72 and 1,145.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790.72 : 4,182.72 = 1,145.04 : x
2. Step 2: Convert to fraction form
   2,790.72/4,182.72 = 1,145.04/x
3. Step 3: Cross multiply
   2,790.72x = 4,182.72 × 1,145.04
4. Step 4: Simplify right side
   2,790.72x = 4,789,381.71
5. Step 5: Solve for x
   x = 4,789,381.71/2,790.72
6. Step 6: Final answer
   x = 1,716.18