Finding the Fourth Proportional to 2,008.31, 3,012.80 and 970.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.31 : 3,012.80 = 970.17 : x
2. Step 2: Convert to fraction form
   2,008.31/3,012.80 = 970.17/x
3. Step 3: Cross multiply
   2,008.31x = 3,012.80 × 970.17
4. Step 4: Simplify right side
   2,008.31x = 2,922,923.33
5. Step 5: Solve for x
   x = 2,922,923.33/2,008.31
6. Step 6: Final answer
   x = 1,455.42