Finding the Fourth Proportional to 1,970.82, 2,956.65 and 672.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.82 : 2,956.65 = 672.18 : x
2. Step 2: Convert to fraction form
   1,970.82/2,956.65 = 672.18/x
3. Step 3: Cross multiply
   1,970.82x = 2,956.65 × 672.18
4. Step 4: Simplify right side
   1,970.82x = 1,987,401.00
5. Step 5: Solve for x
   x = 1,987,401.00/1,970.82
6. Step 6: Final answer
   x = 1,008.41