Finding the Fourth Proportional to 3,554.43, 4,901.31 and 2,491.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,554.43 : 4,901.31 = 2,491.86 : x
2. Step 2: Convert to fraction form
   3,554.43/4,901.31 = 2,491.86/x
3. Step 3: Cross multiply
   3,554.43x = 4,901.31 × 2,491.86
4. Step 4: Simplify right side
   3,554.43x = 12,213,396.72
5. Step 5: Solve for x
   x = 12,213,396.72/3,554.43
6. Step 6: Final answer
   x = 3,436.10