Finding the Fourth Proportional to 1,112.59, 1,667.67 and 534.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.59 : 1,667.67 = 534.25 : x
2. Step 2: Convert to fraction form
   1,112.59/1,667.67 = 534.25/x
3. Step 3: Cross multiply
   1,112.59x = 1,667.67 × 534.25
4. Step 4: Simplify right side
   1,112.59x = 890,952.70
5. Step 5: Solve for x
   x = 890,952.70/1,112.59
6. Step 6: Final answer
   x = 800.79