Finding the Fourth Proportional to 2,313.55, 3,470.15 and 997.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,313.55 : 3,470.15 = 997.25 : x
2. Step 2: Convert to fraction form
   2,313.55/3,470.15 = 997.25/x
3. Step 3: Cross multiply
   2,313.55x = 3,470.15 × 997.25
4. Step 4: Simplify right side
   2,313.55x = 3,460,608.27
5. Step 5: Solve for x
   x = 3,460,608.27/2,313.55
6. Step 6: Final answer
   x = 1,495.80