Finding the Fourth Proportional to 1,112.79, 1,667.89 and 584.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.79 : 1,667.89 = 584.26 : x
2. Step 2: Convert to fraction form
   1,112.79/1,667.89 = 584.26/x
3. Step 3: Cross multiply
   1,112.79x = 1,667.89 × 584.26
4. Step 4: Simplify right side
   1,112.79x = 974,487.35
5. Step 5: Solve for x
   x = 974,487.35/1,112.79
6. Step 6: Final answer
   x = 875.72