Finding the Fourth Proportional to 3,524.61, 5,287.83 and 1,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,524.61 : 5,287.83 = 1,880.72 : x
2. Step 2: Convert to fraction form
   3,524.61/5,287.83 = 1,880.72/x
3. Step 3: Cross multiply
   3,524.61x = 5,287.83 × 1,880.72
4. Step 4: Simplify right side
   3,524.61x = 9,944,924.55
5. Step 5: Solve for x
   x = 9,944,924.55/3,524.61
6. Step 6: Final answer
   x = 2,821.56