Finding the Fourth Proportional to 2,491.20, 3,436.59 and 1,547.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.20 : 3,436.59 = 1,547.55 : x
2. Step 2: Convert to fraction form
   2,491.20/3,436.59 = 1,547.55/x
3. Step 3: Cross multiply
   2,491.20x = 3,436.59 × 1,547.55
4. Step 4: Simplify right side
   2,491.20x = 5,318,269.93
5. Step 5: Solve for x
   x = 5,318,269.93/2,491.20
6. Step 6: Final answer
   x = 2,134.83