Finding the Fourth Proportional to 2,421.16, 3,625.98 and 1,393

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.16 : 3,625.98 = 1,393 : x
2. Step 2: Convert to fraction form
   2,421.16/3,625.98 = 1,393/x
3. Step 3: Cross multiply
   2,421.16x = 3,625.98 × 1,393
4. Step 4: Simplify right side
   2,421.16x = 5,050,990.14
5. Step 5: Solve for x
   x = 5,050,990.14/2,421.16
6. Step 6: Final answer
   x = 2,086.19