Finding the Fourth Proportional to 2,401.81, 3,602.72 and 646.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.81 : 3,602.72 = 646.82 : x
2. Step 2: Convert to fraction form
   2,401.81/3,602.72 = 646.82/x
3. Step 3: Cross multiply
   2,401.81x = 3,602.72 × 646.82
4. Step 4: Simplify right side
   2,401.81x = 2,330,290.10
5. Step 5: Solve for x
   x = 2,330,290.10/2,401.81
6. Step 6: Final answer
   x = 970.22