Finding the Fourth Proportional to 1,194.72, 1,648.58 and 670.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,194.72 : 1,648.58 = 670.64 : x
2. Step 2: Convert to fraction form
   1,194.72/1,648.58 = 670.64/x
3. Step 3: Cross multiply
   1,194.72x = 1,648.58 × 670.64
4. Step 4: Simplify right side
   1,194.72x = 1,105,603.69
5. Step 5: Solve for x
   x = 1,105,603.69/1,194.72
6. Step 6: Final answer
   x = 925.41