Finding the Fourth Proportional to 1,918.79, 2,648.16 and 1,079.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.79 : 2,648.16 = 1,079.52 : x
2. Step 2: Convert to fraction form
   1,918.79/2,648.16 = 1,079.52/x
3. Step 3: Cross multiply
   1,918.79x = 2,648.16 × 1,079.52
4. Step 4: Simplify right side
   1,918.79x = 2,858,749.59
5. Step 5: Solve for x
   x = 2,858,749.59/1,918.79
6. Step 6: Final answer
   x = 1,489.87