Finding the Fourth Proportional to 1,111.06, 1,667.34 and 461.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.06 : 1,667.34 = 461.79 : x
2. Step 2: Convert to fraction form
   1,111.06/1,667.34 = 461.79/x
3. Step 3: Cross multiply
   1,111.06x = 1,667.34 × 461.79
4. Step 4: Simplify right side
   1,111.06x = 769,960.94
5. Step 5: Solve for x
   x = 769,960.94/1,111.06
6. Step 6: Final answer
   x = 693.00