Finding the Fourth Proportional to 1,650.89, 2,278.96 and 1,155.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.89 : 2,278.96 = 1,155.48 : x
2. Step 2: Convert to fraction form
   1,650.89/2,278.96 = 1,155.48/x
3. Step 3: Cross multiply
   1,650.89x = 2,278.96 × 1,155.48
4. Step 4: Simplify right side
   1,650.89x = 2,633,281.27
5. Step 5: Solve for x
   x = 2,633,281.27/1,650.89
6. Step 6: Final answer
   x = 1,595.07