Finding the Fourth Proportional to 2,380.47, 3,564.72 and 1,442.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.47 : 3,564.72 = 1,442.91 : x
2. Step 2: Convert to fraction form
   2,380.47/3,564.72 = 1,442.91/x
3. Step 3: Cross multiply
   2,380.47x = 3,564.72 × 1,442.91
4. Step 4: Simplify right side
   2,380.47x = 5,143,570.14
5. Step 5: Solve for x
   x = 5,143,570.14/2,380.47
6. Step 6: Final answer
   x = 2,160.74