Finding the Fourth Proportional to 2,612.68, 3,605.52 and 1,433.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.68 : 3,605.52 = 1,433.88 : x
2. Step 2: Convert to fraction form
   2,612.68/3,605.52 = 1,433.88/x
3. Step 3: Cross multiply
   2,612.68x = 3,605.52 × 1,433.88
4. Step 4: Simplify right side
   2,612.68x = 5,169,883.02
5. Step 5: Solve for x
   x = 5,169,883.02/2,612.68
6. Step 6: Final answer
   x = 1,978.77