Finding the Fourth Proportional to 2,248.72, 3,102.69 and 1,690.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,248.72 : 3,102.69 = 1,690.53 : x
2. Step 2: Convert to fraction form
   2,248.72/3,102.69 = 1,690.53/x
3. Step 3: Cross multiply
   2,248.72x = 3,102.69 × 1,690.53
4. Step 4: Simplify right side
   2,248.72x = 5,245,185.23
5. Step 5: Solve for x
   x = 5,245,185.23/2,248.72
6. Step 6: Final answer
   x = 2,332.52