Finding the Fourth Proportional to 2,053.25, 3,080.18 and 666.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,053.25 : 3,080.18 = 666.12 : x
2. Step 2: Convert to fraction form
   2,053.25/3,080.18 = 666.12/x
3. Step 3: Cross multiply
   2,053.25x = 3,080.18 × 666.12
4. Step 4: Simplify right side
   2,053.25x = 2,051,766.17
5. Step 5: Solve for x
   x = 2,051,766.17/2,053.25
6. Step 6: Final answer
   x = 999.28