Finding the Fourth Proportional to 2,591.72, 3,887.91 and 949.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.72 : 3,887.91 = 949.04 : x
2. Step 2: Convert to fraction form
   2,591.72/3,887.91 = 949.04/x
3. Step 3: Cross multiply
   2,591.72x = 3,887.91 × 949.04
4. Step 4: Simplify right side
   2,591.72x = 3,689,782.11
5. Step 5: Solve for x
   x = 3,689,782.11/2,591.72
6. Step 6: Final answer
   x = 1,423.68