Finding the Fourth Proportional to 2,381.45, 3,574.48 and 1,149.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.45 : 3,574.48 = 1,149.72 : x
2. Step 2: Convert to fraction form
   2,381.45/3,574.48 = 1,149.72/x
3. Step 3: Cross multiply
   2,381.45x = 3,574.48 × 1,149.72
4. Step 4: Simplify right side
   2,381.45x = 4,109,651.15
5. Step 5: Solve for x
   x = 4,109,651.15/2,381.45
6. Step 6: Final answer
   x = 1,725.69