Finding the Fourth Proportional to 2,165.09, 3,248.64 and 1,124.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,165.09 : 3,248.64 = 1,124.53 : x
2. Step 2: Convert to fraction form
   2,165.09/3,248.64 = 1,124.53/x
3. Step 3: Cross multiply
   2,165.09x = 3,248.64 × 1,124.53
4. Step 4: Simplify right side
   2,165.09x = 3,653,185.02
5. Step 5: Solve for x
   x = 3,653,185.02/2,165.09
6. Step 6: Final answer
   x = 1,687.32