Finding the Fourth Proportional to 2,636.53, 3,957.88 and 1,853.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.53 : 3,957.88 = 1,853.33 : x
2. Step 2: Convert to fraction form
   2,636.53/3,957.88 = 1,853.33/x
3. Step 3: Cross multiply
   2,636.53x = 3,957.88 × 1,853.33
4. Step 4: Simplify right side
   2,636.53x = 7,335,233.32
5. Step 5: Solve for x
   x = 7,335,233.32/2,636.53
6. Step 6: Final answer
   x = 2,782.16