Finding the Fourth Proportional to 1,667.52, 2,499.84 and 742.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.52 : 2,499.84 = 742.24 : x
2. Step 2: Convert to fraction form
   1,667.52/2,499.84 = 742.24/x
3. Step 3: Cross multiply
   1,667.52x = 2,499.84 × 742.24
4. Step 4: Simplify right side
   1,667.52x = 1,855,481.24
5. Step 5: Solve for x
   x = 1,855,481.24/1,667.52
6. Step 6: Final answer
   x = 1,112.72