Finding the Fourth Proportional to 2,321.56, 3,480.72 and 1,166.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.56 : 3,480.72 = 1,166.68 : x
2. Step 2: Convert to fraction form
   2,321.56/3,480.72 = 1,166.68/x
3. Step 3: Cross multiply
   2,321.56x = 3,480.72 × 1,166.68
4. Step 4: Simplify right side
   2,321.56x = 4,060,886.41
5. Step 5: Solve for x
   x = 4,060,886.41/2,321.56
6. Step 6: Final answer
   x = 1,749.21