Finding the Fourth Proportional to 2,847.80, 4,272.53 and 1,181.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,847.80 : 4,272.53 = 1,181.61 : x
2. Step 2: Convert to fraction form
   2,847.80/4,272.53 = 1,181.61/x
3. Step 3: Cross multiply
   2,847.80x = 4,272.53 × 1,181.61
4. Step 4: Simplify right side
   2,847.80x = 5,048,458.27
5. Step 5: Solve for x
   x = 5,048,458.27/2,847.80
6. Step 6: Final answer
   x = 1,772.76