Finding the Fourth Proportional to 1,111.19, 1,667.15 and 494.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.19 : 1,667.15 = 494.82 : x
2. Step 2: Convert to fraction form
   1,111.19/1,667.15 = 494.82/x
3. Step 3: Cross multiply
   1,111.19x = 1,667.15 × 494.82
4. Step 4: Simplify right side
   1,111.19x = 824,938.54
5. Step 5: Solve for x
   x = 824,938.54/1,111.19
6. Step 6: Final answer
   x = 742.40