Finding the Fourth Proportional to 2,614.68, 3,915.54 and 1,790.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,614.68 : 3,915.54 = 1,790.10 : x
2. Step 2: Convert to fraction form
   2,614.68/3,915.54 = 1,790.10/x
3. Step 3: Cross multiply
   2,614.68x = 3,915.54 × 1,790.10
4. Step 4: Simplify right side
   2,614.68x = 7,009,208.15
5. Step 5: Solve for x
   x = 7,009,208.15/2,614.68
6. Step 6: Final answer
   x = 2,680.71