Finding the Fourth Proportional to 1,919.34, 2,648.03 and 1,256.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.34 : 2,648.03 = 1,256.58 : x
2. Step 2: Convert to fraction form
   1,919.34/2,648.03 = 1,256.58/x
3. Step 3: Cross multiply
   1,919.34x = 2,648.03 × 1,256.58
4. Step 4: Simplify right side
   1,919.34x = 3,327,455.25
5. Step 5: Solve for x
   x = 3,327,455.25/1,919.34
6. Step 6: Final answer
   x = 1,733.65