Finding the Fourth Proportional to 2,390.88, 3,582.72 and 1,416

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.88 : 3,582.72 = 1,416 : x
2. Step 2: Convert to fraction form
   2,390.88/3,582.72 = 1,416/x
3. Step 3: Cross multiply
   2,390.88x = 3,582.72 × 1,416
4. Step 4: Simplify right side
   2,390.88x = 5,073,131.52
5. Step 5: Solve for x
   x = 5,073,131.52/2,390.88
6. Step 6: Final answer
   x = 2,121.87