Finding the Fourth Proportional to 2,491.29, 3,436.53 and 1,558.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.29 : 3,436.53 = 1,558.17 : x
2. Step 2: Convert to fraction form
   2,491.29/3,436.53 = 1,558.17/x
3. Step 3: Cross multiply
   2,491.29x = 3,436.53 × 1,558.17
4. Step 4: Simplify right side
   2,491.29x = 5,354,697.95
5. Step 5: Solve for x
   x = 5,354,697.95/2,491.29
6. Step 6: Final answer
   x = 2,149.37