Finding the Fourth Proportional to 2,536.79, 3,805.28 and 1,238.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,536.79 : 3,805.28 = 1,238.22 : x
2. Step 2: Convert to fraction form
   2,536.79/3,805.28 = 1,238.22/x
3. Step 3: Cross multiply
   2,536.79x = 3,805.28 × 1,238.22
4. Step 4: Simplify right side
   2,536.79x = 4,711,773.80
5. Step 5: Solve for x
   x = 4,711,773.80/2,536.79
6. Step 6: Final answer
   x = 1,857.38