Finding the Fourth Proportional to 2,613.42, 3,920.35 and 969.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.42 : 3,920.35 = 969.98 : x
2. Step 2: Convert to fraction form
   2,613.42/3,920.35 = 969.98/x
3. Step 3: Cross multiply
   2,613.42x = 3,920.35 × 969.98
4. Step 4: Simplify right side
   2,613.42x = 3,802,661.09
5. Step 5: Solve for x
   x = 3,802,661.09/2,613.42
6. Step 6: Final answer
   x = 1,455.05