Finding the Fourth Proportional to 2,316.34, 3,196.78 and 1,321.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.34 : 3,196.78 = 1,321.77 : x
2. Step 2: Convert to fraction form
   2,316.34/3,196.78 = 1,321.77/x
3. Step 3: Cross multiply
   2,316.34x = 3,196.78 × 1,321.77
4. Step 4: Simplify right side
   2,316.34x = 4,225,400.46
5. Step 5: Solve for x
   x = 4,225,400.46/2,316.34
6. Step 6: Final answer
   x = 1,824.17