Finding the Fourth Proportional to 2,611.78, 3,604.49 and 1,433.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.78 : 3,604.49 = 1,433.08 : x
2. Step 2: Convert to fraction form
   2,611.78/3,604.49 = 1,433.08/x
3. Step 3: Cross multiply
   2,611.78x = 3,604.49 × 1,433.08
4. Step 4: Simplify right side
   2,611.78x = 5,165,522.53
5. Step 5: Solve for x
   x = 5,165,522.53/2,611.78
6. Step 6: Final answer
   x = 1,977.78