Finding the Fourth Proportional to 2,381.20, 3,284.75 and 1,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.20 : 3,284.75 = 1,540.72 : x
2. Step 2: Convert to fraction form
   2,381.20/3,284.75 = 1,540.72/x
3. Step 3: Cross multiply
   2,381.20x = 3,284.75 × 1,540.72
4. Step 4: Simplify right side
   2,381.20x = 5,060,887.98
5. Step 5: Solve for x
   x = 5,060,887.98/2,381.20
6. Step 6: Final answer
   x = 2,125.35