Finding the Fourth Proportional to 1,648.32, 2,272.98 and 1,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.32 : 2,272.98 = 1,150.78 : x
2. Step 2: Convert to fraction form
   1,648.32/2,272.98 = 1,150.78/x
3. Step 3: Cross multiply
   1,648.32x = 2,272.98 × 1,150.78
4. Step 4: Simplify right side
   1,648.32x = 2,615,699.92
5. Step 5: Solve for x
   x = 2,615,699.92/1,648.32
6. Step 6: Final answer
   x = 1,586.89