Finding the Fourth Proportional to 1,164.04, 1,606.49 and 666.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.04 : 1,606.49 = 666.76 : x
2. Step 2: Convert to fraction form
   1,164.04/1,606.49 = 666.76/x
3. Step 3: Cross multiply
   1,164.04x = 1,606.49 × 666.76
4. Step 4: Simplify right side
   1,164.04x = 1,071,143.27
5. Step 5: Solve for x
   x = 1,071,143.27/1,164.04
6. Step 6: Final answer
   x = 920.19