Finding the Fourth Proportional to 2,658.96, 3,984.72 and 1,197.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.96 : 3,984.72 = 1,197.60 : x
2. Step 2: Convert to fraction form
   2,658.96/3,984.72 = 1,197.60/x
3. Step 3: Cross multiply
   2,658.96x = 3,984.72 × 1,197.60
4. Step 4: Simplify right side
   2,658.96x = 4,772,100.67
5. Step 5: Solve for x
   x = 4,772,100.67/2,658.96
6. Step 6: Final answer
   x = 1,794.72