Finding the Fourth Proportional to 5,300.31, 7,950.69 and 1,790.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.31 : 7,950.69 = 1,790.40 : x
2. Step 2: Convert to fraction form
   5,300.31/7,950.69 = 1,790.40/x
3. Step 3: Cross multiply
   5,300.31x = 7,950.69 × 1,790.40
4. Step 4: Simplify right side
   5,300.31x = 14,234,915.38
5. Step 5: Solve for x
   x = 14,234,915.38/5,300.31
6. Step 6: Final answer
   x = 2,685.68