Finding the Fourth Proportional to 2,612.34, 3,605.16 and 1,433.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.34 : 3,605.16 = 1,433.40 : x
2. Step 2: Convert to fraction form
   2,612.34/3,605.16 = 1,433.40/x
3. Step 3: Cross multiply
   2,612.34x = 3,605.16 × 1,433.40
4. Step 4: Simplify right side
   2,612.34x = 5,167,636.34
5. Step 5: Solve for x
   x = 5,167,636.34/2,612.34
6. Step 6: Final answer
   x = 1,978.16