Finding the Fourth Proportional to 2,953.91, 4,429.55 and 873.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.91 : 4,429.55 = 873.18 : x
2. Step 2: Convert to fraction form
   2,953.91/4,429.55 = 873.18/x
3. Step 3: Cross multiply
   2,953.91x = 4,429.55 × 873.18
4. Step 4: Simplify right side
   2,953.91x = 3,867,796.65
5. Step 5: Solve for x
   x = 3,867,796.65/2,953.91
6. Step 6: Final answer
   x = 1,309.38