Finding the Fourth Proportional to 2,279.72, 3,146.61 and 1,485.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.72 : 3,146.61 = 1,485.23 : x
2. Step 2: Convert to fraction form
   2,279.72/3,146.61 = 1,485.23/x
3. Step 3: Cross multiply
   2,279.72x = 3,146.61 × 1,485.23
4. Step 4: Simplify right side
   2,279.72x = 4,673,426.62
5. Step 5: Solve for x
   x = 4,673,426.62/2,279.72
6. Step 6: Final answer
   x = 2,050.00