Finding the Fourth Proportional to 3,618.82, 5,429.05 and 1,310.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.82 : 5,429.05 = 1,310.32 : x
2. Step 2: Convert to fraction form
   3,618.82/5,429.05 = 1,310.32/x
3. Step 3: Cross multiply
   3,618.82x = 5,429.05 × 1,310.32
4. Step 4: Simplify right side
   3,618.82x = 7,113,792.80
5. Step 5: Solve for x
   x = 7,113,792.80/3,618.82
6. Step 6: Final answer
   x = 1,965.78