Finding the Fourth Proportional to 2,612.61, 3,605.39 and 1,433.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.61 : 3,605.39 = 1,433.67 : x
2. Step 2: Convert to fraction form
   2,612.61/3,605.39 = 1,433.67/x
3. Step 3: Cross multiply
   2,612.61x = 3,605.39 × 1,433.67
4. Step 4: Simplify right side
   2,612.61x = 5,168,941.33
5. Step 5: Solve for x
   x = 5,168,941.33/2,612.61
6. Step 6: Final answer
   x = 1,978.46