Finding the Fourth Proportional to 2,970.42, 4,454.76 and 890.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,970.42 : 4,454.76 = 890.34 : x
2. Step 2: Convert to fraction form
   2,970.42/4,454.76 = 890.34/x
3. Step 3: Cross multiply
   2,970.42x = 4,454.76 × 890.34
4. Step 4: Simplify right side
   2,970.42x = 3,966,251.02
5. Step 5: Solve for x
   x = 3,966,251.02/2,970.42
6. Step 6: Final answer
   x = 1,335.25