Finding the Fourth Proportional to 2,362.21, 3,543.83 and 718.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,362.21 : 3,543.83 = 718.89 : x
2. Step 2: Convert to fraction form
   2,362.21/3,543.83 = 718.89/x
3. Step 3: Cross multiply
   2,362.21x = 3,543.83 × 718.89
4. Step 4: Simplify right side
   2,362.21x = 2,547,633.74
5. Step 5: Solve for x
   x = 2,547,633.74/2,362.21
6. Step 6: Final answer
   x = 1,078.49