Finding the Fourth Proportional to 1,667.76, 2,498.88 and 1,017.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.76 : 2,498.88 = 1,017.12 : x
2. Step 2: Convert to fraction form
   1,667.76/2,498.88 = 1,017.12/x
3. Step 3: Cross multiply
   1,667.76x = 2,498.88 × 1,017.12
4. Step 4: Simplify right side
   1,667.76x = 2,541,660.83
5. Step 5: Solve for x
   x = 2,541,660.83/1,667.76
6. Step 6: Final answer
   x = 1,524.00