Finding the Fourth Proportional to 2,054.32, 3,081.65 and 667.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.32 : 3,081.65 = 667.63 : x
2. Step 2: Convert to fraction form
   2,054.32/3,081.65 = 667.63/x
3. Step 3: Cross multiply
   2,054.32x = 3,081.65 × 667.63
4. Step 4: Simplify right side
   2,054.32x = 2,057,395.95
5. Step 5: Solve for x
   x = 2,057,395.95/2,054.32
6. Step 6: Final answer
   x = 1,001.50