Finding the Fourth Proportional to 2,478.45, 3,716.82 and 997.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.45 : 3,716.82 = 997.23 : x
2. Step 2: Convert to fraction form
   2,478.45/3,716.82 = 997.23/x
3. Step 3: Cross multiply
   2,478.45x = 3,716.82 × 997.23
4. Step 4: Simplify right side
   2,478.45x = 3,706,525.32
5. Step 5: Solve for x
   x = 3,706,525.32/2,478.45
6. Step 6: Final answer
   x = 1,495.50