Finding the Fourth Proportional to 2,389.20, 3,583.56 and 1,499.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.20 : 3,583.56 = 1,499.76 : x
2. Step 2: Convert to fraction form
   2,389.20/3,583.56 = 1,499.76/x
3. Step 3: Cross multiply
   2,389.20x = 3,583.56 × 1,499.76
4. Step 4: Simplify right side
   2,389.20x = 5,374,479.95
5. Step 5: Solve for x
   x = 5,374,479.95/2,389.20
6. Step 6: Final answer
   x = 2,249.49