Finding the Fourth Proportional to 2,248.32, 3,102.72 and 1,317.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,248.32 : 3,102.72 = 1,317.12 : x
2. Step 2: Convert to fraction form
   2,248.32/3,102.72 = 1,317.12/x
3. Step 3: Cross multiply
   2,248.32x = 3,102.72 × 1,317.12
4. Step 4: Simplify right side
   2,248.32x = 4,086,654.57
5. Step 5: Solve for x
   x = 4,086,654.57/2,248.32
6. Step 6: Final answer
   x = 1,817.65