Finding the Fourth Proportional to 2,490.36, 3,735.46 and 847.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.36 : 3,735.46 = 847.72 : x
2. Step 2: Convert to fraction form
   2,490.36/3,735.46 = 847.72/x
3. Step 3: Cross multiply
   2,490.36x = 3,735.46 × 847.72
4. Step 4: Simplify right side
   2,490.36x = 3,166,624.15
5. Step 5: Solve for x
   x = 3,166,624.15/2,490.36
6. Step 6: Final answer
   x = 1,271.55