Finding the Fourth Proportional to 3,116.18, 4,300.42 and 1,790.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,116.18 : 4,300.42 = 1,790.15 : x
2. Step 2: Convert to fraction form
   3,116.18/4,300.42 = 1,790.15/x
3. Step 3: Cross multiply
   3,116.18x = 4,300.42 × 1,790.15
4. Step 4: Simplify right side
   3,116.18x = 7,698,396.86
5. Step 5: Solve for x
   x = 7,698,396.86/3,116.18
6. Step 6: Final answer
   x = 2,470.46