Finding the Fourth Proportional to 3,661.76, 5,492.71 and 1,321.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661.76 : 5,492.71 = 1,321.94 : x
2. Step 2: Convert to fraction form
   3,661.76/5,492.71 = 1,321.94/x
3. Step 3: Cross multiply
   3,661.76x = 5,492.71 × 1,321.94
4. Step 4: Simplify right side
   3,661.76x = 7,261,033.06
5. Step 5: Solve for x
   x = 7,261,033.06/3,661.76
6. Step 6: Final answer
   x = 1,982.94