Finding the Fourth Proportional to 1,064.49, 1,468.83 and 666.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.49 : 1,468.83 = 666.11 : x
2. Step 2: Convert to fraction form
   1,064.49/1,468.83 = 666.11/x
3. Step 3: Cross multiply
   1,064.49x = 1,468.83 × 666.11
4. Step 4: Simplify right side
   1,064.49x = 978,394.35
5. Step 5: Solve for x
   x = 978,394.35/1,064.49
6. Step 6: Final answer
   x = 919.12