Finding the Fourth Proportional to 2,577.32, 3,554.94 and 1,645.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.32 : 3,554.94 = 1,645.40 : x
2. Step 2: Convert to fraction form
   2,577.32/3,554.94 = 1,645.40/x
3. Step 3: Cross multiply
   2,577.32x = 3,554.94 × 1,645.40
4. Step 4: Simplify right side
   2,577.32x = 5,849,298.28
5. Step 5: Solve for x
   x = 5,849,298.28/2,577.32
6. Step 6: Final answer
   x = 2,269.53