Finding the Fourth Proportional to 1,293.14, 1,924.16 and 1,288.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.14 : 1,924.16 = 1,288.82 : x
2. Step 2: Convert to fraction form
   1,293.14/1,924.16 = 1,288.82/x
3. Step 3: Cross multiply
   1,293.14x = 1,924.16 × 1,288.82
4. Step 4: Simplify right side
   1,293.14x = 2,479,895.89
5. Step 5: Solve for x
   x = 2,479,895.89/1,293.14
6. Step 6: Final answer
   x = 1,917.73