Finding the Fourth Proportional to 2,612.96, 3,920.12 and 969.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.96 : 3,920.12 = 969.98 : x
2. Step 2: Convert to fraction form
   2,612.96/3,920.12 = 969.98/x
3. Step 3: Cross multiply
   2,612.96x = 3,920.12 × 969.98
4. Step 4: Simplify right side
   2,612.96x = 3,802,438.00
5. Step 5: Solve for x
   x = 3,802,438.00/2,612.96
6. Step 6: Final answer
   x = 1,455.22