Finding the Fourth Proportional to 2,453.12, 3,381.72 and 1,520

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.12 : 3,381.72 = 1,520 : x
2. Step 2: Convert to fraction form
   2,453.12/3,381.72 = 1,520/x
3. Step 3: Cross multiply
   2,453.12x = 3,381.72 × 1,520
4. Step 4: Simplify right side
   2,453.12x = 5,140,214.40
5. Step 5: Solve for x
   x = 5,140,214.40/2,453.12
6. Step 6: Final answer
   x = 2,095.38