Finding the Fourth Proportional to 1,699.92, 2,344.72 and 1,078.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,699.92 : 2,344.72 = 1,078.56 : x
2. Step 2: Convert to fraction form
   1,699.92/2,344.72 = 1,078.56/x
3. Step 3: Cross multiply
   1,699.92x = 2,344.72 × 1,078.56
4. Step 4: Simplify right side
   1,699.92x = 2,528,921.20
5. Step 5: Solve for x
   x = 2,528,921.20/1,699.92
6. Step 6: Final answer
   x = 1,487.67