Finding the Fourth Proportional to 2,943.72, 4,415.96 and 969.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,943.72 : 4,415.96 = 969.55 : x
2. Step 2: Convert to fraction form
   2,943.72/4,415.96 = 969.55/x
3. Step 3: Cross multiply
   2,943.72x = 4,415.96 × 969.55
4. Step 4: Simplify right side
   2,943.72x = 4,281,483.21
5. Step 5: Solve for x
   x = 4,281,483.21/2,943.72
6. Step 6: Final answer
   x = 1,454.45