Finding the Fourth Proportional to 2,316.42, 3,196.98 and 1,321.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.42 : 3,196.98 = 1,321.79 : x
2. Step 2: Convert to fraction form
   2,316.42/3,196.98 = 1,321.79/x
3. Step 3: Cross multiply
   2,316.42x = 3,196.98 × 1,321.79
4. Step 4: Simplify right side
   2,316.42x = 4,225,720.21
5. Step 5: Solve for x
   x = 4,225,720.21/2,316.42
6. Step 6: Final answer
   x = 1,824.25