Finding the Fourth Proportional to 2,315.69, 3,470.67 and 1,219.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.69 : 3,470.67 = 1,219.35 : x
2. Step 2: Convert to fraction form
   2,315.69/3,470.67 = 1,219.35/x
3. Step 3: Cross multiply
   2,315.69x = 3,470.67 × 1,219.35
4. Step 4: Simplify right side
   2,315.69x = 4,231,961.46
5. Step 5: Solve for x
   x = 4,231,961.46/2,315.69
6. Step 6: Final answer
   x = 1,827.52