Finding the Fourth Proportional to 1,134.32, 1,566.12 and 668.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,134.32 : 1,566.12 = 668.72 : x
2. Step 2: Convert to fraction form
   1,134.32/1,566.12 = 668.72/x
3. Step 3: Cross multiply
   1,134.32x = 1,566.12 × 668.72
4. Step 4: Simplify right side
   1,134.32x = 1,047,295.77
5. Step 5: Solve for x
   x = 1,047,295.77/1,134.32
6. Step 6: Final answer
   x = 923.28