Finding the Fourth Proportional to 3,445.74, 5,167.89 and 979.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,445.74 : 5,167.89 = 979.92 : x
2. Step 2: Convert to fraction form
   3,445.74/5,167.89 = 979.92/x
3. Step 3: Cross multiply
   3,445.74x = 5,167.89 × 979.92
4. Step 4: Simplify right side
   3,445.74x = 5,064,118.77
5. Step 5: Solve for x
   x = 5,064,118.77/3,445.74
6. Step 6: Final answer
   x = 1,469.68