Finding the Fourth Proportional to 1,197.25, 1,648.72 and 976.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,197.25 : 1,648.72 = 976.72 : x
2. Step 2: Convert to fraction form
   1,197.25/1,648.72 = 976.72/x
3. Step 3: Cross multiply
   1,197.25x = 1,648.72 × 976.72
4. Step 4: Simplify right side
   1,197.25x = 1,610,337.80
5. Step 5: Solve for x
   x = 1,610,337.80/1,197.25
6. Step 6: Final answer
   x = 1,345.03