Finding the Fourth Proportional to 2,053.38, 3,080.55 and 666.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,053.38 : 3,080.55 = 666.72 : x
2. Step 2: Convert to fraction form
   2,053.38/3,080.55 = 666.72/x
3. Step 3: Cross multiply
   2,053.38x = 3,080.55 × 666.72
4. Step 4: Simplify right side
   2,053.38x = 2,053,864.30
5. Step 5: Solve for x
   x = 2,053,864.30/2,053.38
6. Step 6: Final answer
   x = 1,000.24