Finding the Fourth Proportional to 2,390.98, 3,586.69 and 930.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.98 : 3,586.69 = 930.24 : x
2. Step 2: Convert to fraction form
   2,390.98/3,586.69 = 930.24/x
3. Step 3: Cross multiply
   2,390.98x = 3,586.69 × 930.24
4. Step 4: Simplify right side
   2,390.98x = 3,336,468.89
5. Step 5: Solve for x
   x = 3,336,468.89/2,390.98
6. Step 6: Final answer
   x = 1,395.44