Finding the Fourth Proportional to 2,643.93, 3,647.71 and 1,508.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.93 : 3,647.71 = 1,508.78 : x
2. Step 2: Convert to fraction form
   2,643.93/3,647.71 = 1,508.78/x
3. Step 3: Cross multiply
   2,643.93x = 3,647.71 × 1,508.78
4. Step 4: Simplify right side
   2,643.93x = 5,503,599.23
5. Step 5: Solve for x
   x = 5,503,599.23/2,643.93
6. Step 6: Final answer
   x = 2,081.60