Finding the Fourth Proportional to 2,577.35, 3,869.64 and 1,329.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.35 : 3,869.64 = 1,329.01 : x
2. Step 2: Convert to fraction form
   2,577.35/3,869.64 = 1,329.01/x
3. Step 3: Cross multiply
   2,577.35x = 3,869.64 × 1,329.01
4. Step 4: Simplify right side
   2,577.35x = 5,142,780.58
5. Step 5: Solve for x
   x = 5,142,780.58/2,577.35
6. Step 6: Final answer
   x = 1,995.37