Finding the Fourth Proportional to 2,915.01, 4,022.81 and 1,780.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,915.01 : 4,022.81 = 1,780.41 : x
2. Step 2: Convert to fraction form
   2,915.01/4,022.81 = 1,780.41/x
3. Step 3: Cross multiply
   2,915.01x = 4,022.81 × 1,780.41
4. Step 4: Simplify right side
   2,915.01x = 7,162,251.15
5. Step 5: Solve for x
   x = 7,162,251.15/2,915.01
6. Step 6: Final answer
   x = 2,457.02