Finding the Fourth Proportional to 2,275.16, 3,140.76 and 1,715.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.16 : 3,140.76 = 1,715.86 : x
2. Step 2: Convert to fraction form
   2,275.16/3,140.76 = 1,715.86/x
3. Step 3: Cross multiply
   2,275.16x = 3,140.76 × 1,715.86
4. Step 4: Simplify right side
   2,275.16x = 5,389,104.45
5. Step 5: Solve for x
   x = 5,389,104.45/2,275.16
6. Step 6: Final answer
   x = 2,368.67