Finding the Fourth Proportional to 2,970.67, 4,456.17 and 890.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,970.67 : 4,456.17 = 890.46 : x
2. Step 2: Convert to fraction form
   2,970.67/4,456.17 = 890.46/x
3. Step 3: Cross multiply
   2,970.67x = 4,456.17 × 890.46
4. Step 4: Simplify right side
   2,970.67x = 3,968,041.14
5. Step 5: Solve for x
   x = 3,968,041.14/2,970.67
6. Step 6: Final answer
   x = 1,335.74