Finding the Fourth Proportional to 3,160.82, 4,742.15 and 969.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,160.82 : 4,742.15 = 969.87 : x
2. Step 2: Convert to fraction form
   3,160.82/4,742.15 = 969.87/x
3. Step 3: Cross multiply
   3,160.82x = 4,742.15 × 969.87
4. Step 4: Simplify right side
   3,160.82x = 4,599,269.02
5. Step 5: Solve for x
   x = 4,599,269.02/3,160.82
6. Step 6: Final answer
   x = 1,455.09