Finding the Fourth Proportional to 1,636.74, 2,258.55 and 973.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.74 : 2,258.55 = 973.49 : x
2. Step 2: Convert to fraction form
   1,636.74/2,258.55 = 973.49/x
3. Step 3: Cross multiply
   1,636.74x = 2,258.55 × 973.49
4. Step 4: Simplify right side
   1,636.74x = 2,198,664.55
5. Step 5: Solve for x
   x = 2,198,664.55/1,636.74
6. Step 6: Final answer
   x = 1,343.32