Finding the Fourth Proportional to 1,200.32, 1,656.37 and 669.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.32 : 1,656.37 = 669.17 : x
2. Step 2: Convert to fraction form
   1,200.32/1,656.37 = 669.17/x
3. Step 3: Cross multiply
   1,200.32x = 1,656.37 × 669.17
4. Step 4: Simplify right side
   1,200.32x = 1,108,393.11
5. Step 5: Solve for x
   x = 1,108,393.11/1,200.32
6. Step 6: Final answer
   x = 923.41