Finding the Fourth Proportional to 1,201.59, 1,658.22 and 670.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201.59 : 1,658.22 = 670.47 : x
2. Step 2: Convert to fraction form
   1,201.59/1,658.22 = 670.47/x
3. Step 3: Cross multiply
   1,201.59x = 1,658.22 × 670.47
4. Step 4: Simplify right side
   1,201.59x = 1,111,786.76
5. Step 5: Solve for x
   x = 1,111,786.76/1,201.59
6. Step 6: Final answer
   x = 925.26