Finding the Fourth Proportional to 1,685.46, 2,324.72 and 1,300.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.46 : 2,324.72 = 1,300.78 : x
2. Step 2: Convert to fraction form
   1,685.46/2,324.72 = 1,300.78/x
3. Step 3: Cross multiply
   1,685.46x = 2,324.72 × 1,300.78
4. Step 4: Simplify right side
   1,685.46x = 3,023,949.28
5. Step 5: Solve for x
   x = 3,023,949.28/1,685.46
6. Step 6: Final answer
   x = 1,794.14