Finding the Fourth Proportional to 2,599.38, 3,587.47 and 1,643.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.38 : 3,587.47 = 1,643.69 : x
2. Step 2: Convert to fraction form
   2,599.38/3,587.47 = 1,643.69/x
3. Step 3: Cross multiply
   2,599.38x = 3,587.47 × 1,643.69
4. Step 4: Simplify right side
   2,599.38x = 5,896,693.42
5. Step 5: Solve for x
   x = 5,896,693.42/2,599.38
6. Step 6: Final answer
   x = 2,268.50