Finding the Fourth Proportional to 2,054.35, 3,080.85 and 667.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.35 : 3,080.85 = 667.36 : x
2. Step 2: Convert to fraction form
   2,054.35/3,080.85 = 667.36/x
3. Step 3: Cross multiply
   2,054.35x = 3,080.85 × 667.36
4. Step 4: Simplify right side
   2,054.35x = 2,056,036.06
5. Step 5: Solve for x
   x = 2,056,036.06/2,054.35
6. Step 6: Final answer
   x = 1,000.82