Finding the Fourth Proportional to 2,950.72, 4,426.32 and 898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,950.72 : 4,426.32 = 898.72 : x
2. Step 2: Convert to fraction form
   2,950.72/4,426.32 = 898.72/x
3. Step 3: Cross multiply
   2,950.72x = 4,426.32 × 898.72
4. Step 4: Simplify right side
   2,950.72x = 3,978,022.31
5. Step 5: Solve for x
   x = 3,978,022.31/2,950.72
6. Step 6: Final answer
   x = 1,348.15