Finding the Fourth Proportional to 1,194.67, 1,648.56 and 670.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,194.67 : 1,648.56 = 670.78 : x
2. Step 2: Convert to fraction form
   1,194.67/1,648.56 = 670.78/x
3. Step 3: Cross multiply
   1,194.67x = 1,648.56 × 670.78
4. Step 4: Simplify right side
   1,194.67x = 1,105,821.08
5. Step 5: Solve for x
   x = 1,105,821.08/1,194.67
6. Step 6: Final answer
   x = 925.63