Finding the Fourth Proportional to 2,375.43, 3,560.86 and 989.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,375.43 : 3,560.86 = 989.72 : x
2. Step 2: Convert to fraction form
   2,375.43/3,560.86 = 989.72/x
3. Step 3: Cross multiply
   2,375.43x = 3,560.86 × 989.72
4. Step 4: Simplify right side
   2,375.43x = 3,524,251.15
5. Step 5: Solve for x
   x = 3,524,251.15/2,375.43
6. Step 6: Final answer
   x = 1,483.63