Finding the Fourth Proportional to 1,111.10, 1,667.07 and 494.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.10 : 1,667.07 = 494.87 : x
2. Step 2: Convert to fraction form
   1,111.10/1,667.07 = 494.87/x
3. Step 3: Cross multiply
   1,111.10x = 1,667.07 × 494.87
4. Step 4: Simplify right side
   1,111.10x = 824,974.60
5. Step 5: Solve for x
   x = 824,974.60/1,111.10
6. Step 6: Final answer
   x = 742.49