Finding the Fourth Proportional to 2,358.16, 3,538.72 and 1,318.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,358.16 : 3,538.72 = 1,318.84 : x
2. Step 2: Convert to fraction form
   2,358.16/3,538.72 = 1,318.84/x
3. Step 3: Cross multiply
   2,358.16x = 3,538.72 × 1,318.84
4. Step 4: Simplify right side
   2,358.16x = 4,666,993.34
5. Step 5: Solve for x
   x = 4,666,993.34/2,358.16
6. Step 6: Final answer
   x = 1,979.09